GERM Reservoir Database
Development and Maintenance by the EarthRef.org Database Team

GERM Database Search Results        
Reservoir Z Element Value Median SD Low High N Unit Info Reference Source(s)
Acapulcoite Primitive Achondrites 77 Ir 536           ng/g Trace element compositional data on Acapulcoites. Mittlefehldt 2004 Yanai & Kojima 1991
Zipfel et al. 1995
ALH 77005 Meteorite 77 Ir 3.9   0.3       ppb Mars elemental abundances as given by ALH77005 meteorite, which is a lherzolitic shergottite, as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
ALH 84001 Meteorite 77 Ir 0.08           ppb Mars elemental abundances as given by ALH84001 meteorite, which is an orthopyroxenite, as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
ALH 84025 Brachinite 77 Ir 123           ng/g Trace element compositional data on ALH 84025 Brachinite. Mittlefehldt 2004 Warren & Kallemeyn 1989a
ALHA 77257 Urelite 77 Ir 184           ng/g Trace element compositional data on ALHA77257 Urelite. Mittlefehldt 2004 Jarosewich 1990
Warren & Kallemeyn 1992
Spitz & Boynton 1991
ALHA 81101 Urelite 77 Ir 37           ng/g Trace element compositional data on ALHA81101 Urelite. Mittlefehldt 2004 Warren & Kallemeyn 1992
Spitz & Boynton 1991
ALHA77081 Acapulcoite 77 Ir 840           ng/g Trace element compositional data on Acapulcoite ALHA77081. Mittlefehldt 2004 Schultz et al. 1982
Allende Meteorite 77 Ir 940           ng/g Concentratons of elements in the Allende chondrites which were determined by both INAA and RNAA. After analyses, the sameples were then prepared in thin section and prepared for optic analyses by electron microprobe. Grossman & Wasson 1985
Angra dos Reis Angrite 77 Ir 2.6           ppb Elemental abundance of the Angra dos Reis meteorite.  Classified as an Angrite, the sample itself consists of a thin slice of material most likely made with a cutoff wheel.  However, the high abundance of Cu in the sample indicates that the sample was contaminated from the wheel used to make the slice of material. Laul et al. 1972
Aubres Aubrite 77 Ir 0.822           ng/g Trace element compositional data on Aubres Aubrite. Mittlefehldt 2004 Easton 1985
Wolf et al. 1983
Barea Mesosiderite 77 Ir 21.4           ng/g Trace element compositional data on Barea Mesosiderite. Mittlefehldt 2004 Mason & Jarosewich 1973
Mittlefehldt in press
Bereba Eucrite 77 Ir 0.7           ppb Laul et al. 1972
Bereba Eucrite 77 Ir 0.7           ppb Elemental abundance of the B¿r¿ba meteorite.  Sample consisted of one or several chips between 500-300 mg, and no cleaning was attempted before irradiation.  Laul et al. 1972
Bialystok Howardite 77 Ir 5.74           ppb Elemental abundance of the Bialystok meteorite.  Classified as a Howardite, the sample itself consists of one or several chips between 500-300 mg. No cleaning was attempted before irradiation. Laul et al. 1972
Brachina Brachinite 77 Ir 135           ng/g Trace element compositional data on Brachina Brachinite. Mittlefehldt 2004 Nehru et al. 1983
CAI Inclusions Allende Meteorite 77 Ir 9.56   0.2868       ppm Bulk composition of an 111.1mg Ca-Al-rich inclusion from the Allende Meteorite named A37. Analyses performed on A37 were by Instrumental Neutron Activation Analysis, all values given in ppm. This particular analysis performed included all ranges of sections from A37 which therin yielded the best approximation of where particular elements were best located. Bischoff & Palme 1987
Carbonaceous Chondrites   Os/Ir 1.07   0.04         Element ratios were determined on relatively unaltered chondritic meteorites including CI, CM, CO, CV and CK. McDonough & Sun 1995
Chassigny Achondrite 77 Ir 6           ppm Elemental abundances of the Chassigny Meteorite which is a urelite achondrite. Abundances were determined by Instrumental Neutron Activation Analysis and also Radiochemical Neutron Activation Analysis in order to attain more precise data for REEs. Boynton et al. 1976
Chassigny Achondrite 77 Ir 1.85           ppb Trace element abundances of the Chassigny meteorite given by Treiman et al. 1986.  These values along with those of the C1 Chondrites are used mainly for comparison and normalization of values taken from other sources pertaining to Urelites.  Janssens et al. 1987 Treiman et al. 1986
Chassigny Meteorite 77 Ir 2.1   0.4       ppb Mars elemental abundances as given by Chassigny meteorite (chassignite) as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
Chaunskij Mesosiderite 77 Ir 18.8           ng/g Trace element compositional data on Chaunskij Mesosiderite. Mittlefehldt 2004 Mittlefehldt in press
Petaev et al. 2000
CI Chondrites 77 Ir 0.481           ppm Abundance of elements in the solar system from Anders & Grevesse 1989 study of CI meteorites. Palme & Jones 2004 Anders & Grevesse 1989
CI Chondrites 77 Ir 481           ppb C1 Chondrite trace element abundances as found by Anders and Ebihara 1982.  All Urelite values given by other sources are normalized to these values simply to put the data on a common scale. Janssens et al. 1987 Anders & Ebihara 1982
CI Chondrites 77 Ir 460           ppb C1 Carbonaceous chondrite major and minor element compositions as given in Wasson & Kallemeyn 1988. These values are given in an effort to accurately represent the C1 chondrites as based on an array of sources and derive a revised model for the composition of the Earth. McDonough & Sun 1995 Wasson & Kallemeyn 1988
CI Chondrites 77 Ir 1.36   0.02         CI Meteorite derived solar system abundances of various elements. Palme & Jones 2004
CI Chondrites 77 Ir 455           ppb Based on measurements on 3 out of 5 carbonaceous chrondrites namely Orgueil, Ivuna and Alais. McDonough & Sun 1995
CI Chondrites 77 Ir 480   19.2       ppb Composition of the Primitive Mantle of the Earth as based on CI Chondritic major and trace element compositions from Chapter 1.03 Palme & Jones 2004 Treatise of Geochemistry. Palme & O'Neill 2004 Palme & Jones 2004
CI Chondrites 77 Ir 481   29.3     36 ppb Mean C1 chondrite from atomic abundances based on C = 3.788E-3*H*A where C = concentration; H = atomic abundance and A = atomic weight. Values are not normalised to 100% Anders & Grevesse 1989
CI Chondrites 77 Ir 0.48   0.0192       ppm Abundance of elements in the solar system based off of Palme & Beer 1993 study of CI meteorites. Palme & Jones 2004 Palme & Beer 1993
Jochum 1996
CI Chondrites 77 Ir 480           ppb C1 Carbonaceous chondrite major and minor element compositions as given in Palme 1988. These values are given in an effort to accurately represent the C1 chondrites as based on an array of sources and derive a revised model for the composition of the Earth. McDonough & Sun 1995 Palme 1988
CI Chondrites   Os/Ir 1.077             Element ratios were determined on relatively unaltered chondritic meteorites. McDonough & Sun 1995
Constantinople Eucrite 77 Ir 0.31           ppb Laul et al. 1972
Constantinople Eucrite 77 Ir 0.31           ppb Elemental abundance of the Constantinople meteorite.  Classified as a eucrite the sample consisted of one or several chips between 500-300 mg, and no cleaning was attempted before irradiation. Laul et al. 1972
Continental Crust 77 Ir 0.05           ppb UCC; LCC = from composite sample of 17 European greywackes analysed by ICP-MASS in nickel sulfide extract after Te co-precipitation (Hartmann, 1995). Wedepohl 1995
Continental Crust 77 Ir 0.1           ppb Taylor & McLennan 1995
Continental Crust 77 Ir 0.1           ppb Enrichment of elements in the bulk continental crust given by Rudnick & Gao from Chapter 3.1 of the Treatise on Geochemistry 2004. Palme & O'Neill 2004 Rudnick & Gao 2004
Continental Crust 77 Ir 0.037           ng/g Recommended composition of the Bulk Continental Crust where the total-crust composition is calculated according to the upper, middle and lower-crust compositions obtained in this study and corresponding weighing factors of 0.317, 0.296 and 0.388. The weighing factors are based on the layer thickness of the global continental crust, recalculated from crustal structure and areal proportion of various tectonic units given by Rudnick and Fountain 1995. Rudnick & Gao 2004 Rudnick & Fountain 1995
Continental Crust 77 Ir 0.05           ng/g Major and trace element compositional estimates of the Bulk Continental Crust given by Wedepohl 1995. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Wedepohl 1995
Continental Crust 77 Ir 0.1           ng/g Major and trace element compositional estimates of the Bulk Continental Crust given by Taylor and McLennan 1985 & 1995. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Taylor & McLennan 1985
Taylor & McLennan 1995
Continental Crust 77 Ir 0.037           ng/g Rudnick & Gao 2004
Core 77 Ir 2.6           ppm Elemental composition of the Earth's core as given in ppm unless stated as wt. %. McDonough 2004
Core 77 Ir 2.6           µg/g Compostioinal models for the bulk Earth, core and silicate Earth are modified after McDonough & Sun (1995). McDonough 1998
Depleted Mantle 77 Ir 0.0075             Iridium abundances in the upper mantle normalized to the C1 Chondrite value of 473 ppb taken from Orgueil Chondrite values in Anders & Ebihara 1982. Jones & Drake 1986 Morgan et al. 1980
Depleted Mantle 77 Ir 2.9   0.58       ppb Estimate for the concentrations in the Depleted Mantle of most of the elements of the Periodic Table.  Per is the element ratio/constraint used to make this estimate. Salters & Stracke 2004
Dyalpur Ureilite 77 Ir 218           ppb Trace element values for the Dyalpur meteorite as given in Higuchi et al. 1976.  Mainly used in this study as comparisons to the Kenna and Havero meteorites.  Janssens et al. 1987 Higuchi et al. 1976
EET 83309 Urelite 77 Ir 249           ng/g Trace element compositional data on EET 83309 Urelite. Mittlefehldt 2004 Warren & Kallemeyn 1989b
EET 84302 Acapulcoite 77 Ir 2125           ng/g Trace element compositional data on achondrite EET84302 which is between Acapulcoite and lodranite. Mittlefehldt 2004 Weigel et al. 1999
Enstatite Chondrites   Os/Ir 1.15   0.06         Element ratios were determined on relatively unaltered chondritic meteorites including EL and EH. McDonough & Sun 1995
Frankfort Howardite 77 Ir 3.5           ppb Elemental abundance of the Frankfort meteorite.  Classified as a Howardite, the sample itself consists of one or several chips between 500-300 mg. No cleaning was attempted before irradiation. Laul et al. 1972
Frankfort Howardites 77 Ir 4.1           ng/g Trace element compositional data on Frankfort Howardite. Mittlefehldt 2004 McCarthy et al. 1972
Palme et al. 1978
Garnet Peridotites 77 Ir   3.8         ppm McDonough 1991 Maaloe & Aoki 1975
Jordan 1979
Boyd 1989
McDonough 1990
Garnet Peridotites   Ni/Ir 630000   290000         McDonough 1991
Gibson Lodranite 77 Ir 1220           ng/g Trace element compositional data on Gibson Lodranite. Mittlefehldt 2004 Weigel et al. 1999
Goalpara Ureilite 77 Ir 80   10       ppm Elemental abundances of the Goalpara Meteorite which is a urelite achondrite. Abundances were determined by Instrumental Neutron Activation Analysis and also Radiochemical Neutron Activation Analysis in order to attain more precise data for REEs. Boynton et al. 1976
Goalpara Ureilite 77 Ir 77.4           ppb Trace element abundances of the Goalpara meteorite first reported by Higuchi et al. 1976.  These trace element values are given in an effort to resolve a disagreement about Ir and W values being associated with veins or bulk rock. These values are compared to other vein and bulk rock values obtained via other meteorites analyzed in this study. Janssens et al. 1987 Higuchi et al. 1976
Greywackes 77 Ir 0.05           ppb Total average of group averages from USA, Canada, Australia, Sri Lanka and Germany using an equal statistical weight. Wedepohl 1995
Havero Ureilite 77 Ir 248           ppb Trace element abundances of the Havero (bulk) meteorite first reported by Higuchi et al. 1976.  These trace element values are given in an effort to resolve a disagreement about Ir and W values being associated with veins or bulk rock. These values are compared to other vein and bulk rock values obtained via other meteorites analyzed in this study. Janssens et al. 1987 Higuchi et al. 1976
Havero Ureilite Vein Metal 77 Ir 1400           ppb Trace element abundances of the Havero Vein sample B18-2 analyzed here by Janssens et al. 1987.  According to analysis of the siderophile elements of Havero, this sample is highly enriched in vein material as indicated by noble gas and this trace element data.  .. Janssens et al. 1987
Havero Urelite 77 Ir 240           ng/g Trace element compositional data on Havero Urelite. Mittlefehldt 2004 Wanke et al. 1972
IAB Campo del Cielo 77 Ir 740           ng/g Trace element compositional data on IAB from Campo del Cielo. Mittlefehldt 2004 Bild 1977
IAB Iron Meteorites 77 Ir 2           µg/g Average elemental composition of Group IAB meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
IAB Landes 77 Ir 700           ng/g Trace element compositional data on IAB from Landes. Mittlefehldt 2004 Bild 1977
IAB Udei Station 77 Ir 37           ng/g Trace element compositional data on IAB from Udei Station. Mittlefehldt 2004 Kallemeyn & Wasson 1985
IIAB Iron Meteorites 77 Ir 12.5           µg/g Average elemental composition of Group IIAB meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
IIAB Iron Meteorites 77 Ir 1.3           µg/g Calculated Initial Liquid Composition of the Earth Core from IIAB meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
IIIAB Iron Meteorites 77 Ir 3.2           µg/g Average elemental composition of Group IIIAB meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
IIIAB Iron Meteorites 77 Ir 5           µg/g Calculated Initial Liquid Composition of the Earth Core from IIIAB meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
IVA Iron Meteorites 77 Ir 1.8           µg/g Calculated Initial Liquid Composition of the Earth Core from IVA meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
IVA Iron Meteorites 77 Ir 1.8           µg/g Average elemental composition of Group IVA meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
IVB Iron Meteorites 77 Ir 22           µg/g Calculated Initial Liquid Composition of the Earth Core from IVB meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
IVB Iron Meteorites 77 Ir 18           µg/g Average elemental composition of Group IVB meteorites. Haack & McCoy 2004 Chabot & Drake 2000
Jones & Drake 1983
Johnstown Diogenite 77 Ir 6.4           ng/g Trace element compositional data on Johnstown Diogenite. Mittlefehldt 2004 Wanke et al. 1977
Jonzac Eucrite 77 Ir 0.46           ppb Laul et al. 1972
Jonzac Eucrite 77 Ir 0.46           ppb Elemental abundance of the Jonzac meteorite.  Classified as a eucrite the sample consisted of one or several chips between 500-300 mg, and no cleaning was attempted before irradiation. Laul et al. 1972
Juvinas Eucrite 77 Ir 4.1           ppb Elemental abundance of the Juvinas meteorite.  Classified as a eucrite the sample consisted of one or several chips between 500-300 mg, and no cleaning was attempted before irradiation. Suspected of contamination. Laul et al. 1972
Juvinas Eucrite 77 Ir 28           ppt Major, minor and trace element abundances of the Juvinas eucrite, which is a typical brecciated sample.  Juvinas was analyzed according to various types of Neutron Activation Analysis and it was found to be compositionally similar to Ibitira eucrite. Other characteristics that define Juvinas are its mineral assemblages and oriented textures with lithic clasts several centimeters wide, and positive Eu anomalies which resembles rocks from a layered igneous intrusion.  Morgan et al. 1978
Juvinas Eucrite 77 Ir 27000           ppt Element concentrations for Juvinas eucrite as analyzed by various different sources.  This particular sample has been studied quite a bit, so relevant data to compare to values found by this study (Morgan et al. 1978) are in great abundance. Morgan et al. 1978 Wanke et al. 1972
Juvinas Eucrite 77 Ir 4.1           ppb Suspected of contamination. Laul et al. 1972
Kapoeta Howardites 77 Ir 20           ng/g Trace element compositional data on Kapoeta Howardite. Mittlefehldt 2004 Wanke et al. 1972
Kenna Ureilite 77 Ir 560   20       ppm Elemental abundances of the Kenna Meteorite which is a urelite achondrite. Abundances were determined by Instrumental Neutron Activation Analysis and also Radiochemical Neutron Activation Analysis in order to attain more precise data for REEs. Boynton et al. 1976
Kenna Ureilite 77 Ir 598         1 ppb Abundances of the trace elements found in the Kenna Meteorite taken from sample H159.23 from the American Meteorite Laboratory.  This bulk urelite sample is the richest in siderophile elements. Janssens et al. 1987
Kenna Ureilite Vein Metal 77 Ir 740           ppb Trace element abundances of the Kenna Vein material which in fact was a hand picked separate of only 33mg.  According to this analysis of the siderophile elements it is only slightly enriched in vein material.  Janssens et al. 1987
Komatiites   Ni/Ir 1000000             McDonough 1991
Lafayette Nakhlite 77 Ir 0.13           ppb Elemental abundance of the Lafayette meteorite.  Classified as a Nakhlite, the sample itself consists of material from one or several chips between 500 and 300 mg. No cleaning was attempted prior to irradiation. Laul et al. 1972
LL Ordinary Chondrites 77 Ir 330           ng/g Concentratons of elements in mean LL chondrites which were determined by both INAA and RNAA. After analyses, the sameples were then prepared in thin section and prepared for optic analyses by electron microprobe. Grossman & Wasson 1985
Lower Continental Crust 77 Ir 0.05           ng/g Recommended composition of the Lower Continental crust as given by various sources. Major element oxides are given in wt.% and trace element concentrations are given in either ng/g or ¿g/g. Rudnick & Gao 2004 Taylor & McLennan 1985
Lower Continental Crust 77 Ir 0.13           ng/g Major and trace element compositional estimates of the lower continental crust as given by Taylor and McLennan 1985, 1995 using average lower crustal abundances. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Taylor & McLennan 1985
Taylor & McLennan 1995
Lower Continental Crust 77 Ir 0.13           ppb Taylor & McLennan 1995
MAC 88177 Lodranite 77 Ir 31           ng/g Trace element compositional data on Lodranite MAC 88177. Mittlefehldt 2004 Weigel et al. 1999
Macibini Eucrites 77 Ir 0.7           ng/g Trace element compositional data on Macibini Eucrite. Mittlefehldt 2004 McCarthy et al. 1973
Buchanan et al. 2000b
Malvern Howardites 77 Ir 9           ng/g Trace element compositional data on Malvern Howardite. Mittlefehldt 2004 Palme et al. 1978
Manganese Nodules 77 Ir 0.007           ppm Average concentrations of various elements found in deep sea Manganese nodules.  Sea salt components are subtracted assuming all chloride is of seawater origin. Li 1991 Baturin 1988
Marine Organisms 77 Ir 2e-05           ppm Concentration values of various elements found in marine organisms. Element concentrations are mainly from brown algae data from Bowen 1979, which are also indicative of phytoplankton and zooplankton. Li 1991 Bowen 1979

Marine Pelagic Clay 77 Ir 0.0004           ppm Average concentrations for various elements enriched in Oceanic Pelagic Clays.  Compared to the element values of Shales, the Pelagic Clays are relatively similar with few exceptions.   All sea salt components are subtracted from the sample analysis assuming all chloride is of seawater origin. Li 1991 Turekian & Wedepohl 1961
Goldberg et al. 1986
Marine Shales 77 Ir 8e-05           ppm Average concentrations of various elements in shales, note that the values are within a factor of two or better as compared to Oceanic Pelagic Clays with a few exceptions.  The exceptions, as far as this reference is concerned, are not critical and any conclusions drawn are applicable to both Oceanic Pelagic Clays and Shales.  Li 1991 Turekian & Wedepohl 1961
Fenner & Presley 1984
META 78008 Urelite 77 Ir 340           ng/g Trace element compositional data on META 78008 Urelite. Mittlefehldt 2004 Warren & Kallemeyn 1992
Miles IIE Iron 77 Ir 36           ng/g Trace element compositional data on Miles IIE Iron. Mittlefehldt 2004 Ebihara et al. 1997
Miles IIE Iron 77 Ir 30           ng/g Trace element compositional data on Miles IIE Iron. Mittlefehldt 2004 Ebihara et al. 1997
Molteno Howardite 77 Ir 31           ppb Elemental abundance of the Molteno meteorite.  Classified as a Howardite, the sample itself consists of light material from one or several chips between 500 and 300 mg. No cleaning was attempted prior to irradiation. Laul et al. 1972
Nakhla Meteorite 77 Ir 0.22   0.1       ppb Mars elemental abundances as given by Nakhla meteorite (nakhlite) as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
Nakhla Nakhlite 77 Ir 17           ppb Elemental abundance of the Nakhla meteorite.  Classified as a Nakhlite, the sample itself consists of material from one or several chips between 500 and 300 mg. No cleaning was attempted prior to irradiation. Laul et al. 1972
North American Shale Composite (NASC) 77 Ir 3.9           ppt Major, minor and trace element concentrations of eucrites from Ibitira which is a vesicular unbrecciated eucrite sample. The vesicular nature of Ibitira is possibly due to the fact that it crystallzed at a low pressure relative to other eucrites. This sample has been analyzed according to Neutron Activation using a single chip of the Ibitira sample.  Morgan et al. 1978
Novo-Urei Ureilite 77 Ir 440   5       ppm Elemental abundances of the Novo-Urei Meteorite which is a urelite achondrite. Abundances were determined by Instrumental Neutron Activation Analysis and also Radiochemical Neutron Activation Analysis in order to attain more precise data for REEs. Boynton et al. 1976
Novo-Urei Ureilite 77 Ir 467           ppb Trace element abundances of the Novo Urei meteorite originally given by Higuchi et al. 1976. Novo Urei happens to be the second in line as far as richest in siderophile element abundances, second only to Kenna Meteorite.  Janssens et al. 1987 Higuchi et al. 1976
Nuevo Laredo Eucrite 77 Ir 0.083           ng/g Trace element compositional data on Nuevo Laredo Eucrites. Mittlefehldt 2004 Warren & Jerde 1987
Oceans Surface water 77 Ir 0.1             Surface or near-surface concentratio. Where possible data is from the Pacific ocean that shows the greates variations; otherwhise data is from the Atlantic ocean. Quinby-Hunt & Turekian 1983
Ordinary Chondrites   Os/Ir 1.07   0.03         Element ratios were determined on relatively unaltered chondritic meteorites including L, LL and H. McDonough & Sun 1995
Orgueil Chondrite 77 Ir 420           ng/g Bulk compositions of Orgueil chondrules as measured by INAA. Bulk compositions of Orgueil chondrules as measured by INAA. Grossman et al. 1985
Orgueil Chondrite 77 Ir 473         26 ppb Solar system abundances of major and minor elements as based on studies from the Orgueil Meteorite. Abundances in the Orgueil meteorite are adequately close to the C1 chondrite mean except for REE, in which case other studies will yield more preferable results Anders & Ebihara 1982
Orgueil Chondrite 77 Ir 474         27 ppb Orgueil meteorite measurements. Anders & Grevesse 1989
Pena Blanca Spring Aubrite 77 Ir 0.31           ng/g Trace element compositional data on Pe¿a Blanca Spring Aubrite. Mittlefehldt 2004 Wolf et al. 1983
Lodders et al. 1993
Periodotite Section in Ophiolites 77 Ir   3.5         ppm McDonough 1991
Periodotite Section in Ophiolites   Ni/Ir 515000   120000         McDonough 1991
Pesyanoe Aubrite 77 Ir 1.34           ppb Elemental abundance of the Pesyanoe meteorite.  Classified as an Angrite, the sample itself consists of dark material from the gas-rich, brecciated meteorite which was obtained by Dr. Brian Mason (U.S. National Museum).  Laul et al. 1972
Pesyanoe Aubrite 77 Ir 5.15           ppb Elemental abundance of the Pesyanoe meteorite.  Classified as an Angrite, the sample itself consists of light material from the gas-rich, brecciated meteorite which was obtained by Dr. Brian Mason (U.S. National Museum).  Laul et al. 1972
Precambrian Canadian Shield 77 Ir 0.024           ppb Shaw et al. 1986
Primitive Mantle 77 Ir 3.2           ppb Elemental abundances of the Primitive Mantle of the Earth as given by various sources. This set of values are given as a comparison to those of the Bulk Continental Crust given by Rudnick & Gao of the Treatise on Geochemistry Chapter 3.1. Palme & O'Neill 2004 Morgan et al. 2001
Primitive Mantle 77 Ir 3.2   0.32       ppb Elemental composition of the Primitive Mantle of the Earth as given from this study and other various sources. These elemental values are compared to those of CI Chondrites given by Palme & Jones 2004 Treatise of Geochemistry. Comments given by the authors in reference to these values: av. PM analyses Palme & O'Neill 2004 Morgan et al. 2001
Primitive Mantle 77 Ir 3.2   0.96       ppb Pyrolite model for the silicate Earth composition based on peridotites, komatiites and basalts. Error estimate is subjective. McDonough & Sun 1995
Primitive Mantle 77 Ir   3.3         ppm McDonough 1991 McDonough & Frey 1989
Sun 1982
Primitive Mantle   Ni/Ir 570000             McDonough 1991
Qingzhen Enstatite Chondrite 77 Ir 668           ng/g Bulk elemental compositions of Quingzhen whole rock as measured by Instrumental Neutron Activation Analysis. Grossman et al. 1985
QUE 94201 Meteorite 77 Ir 3           ppb Mars elemental abundances as given by QUE94201 meteorite, which is a basalitc shergottite, as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
Seawater 77 Ir 0.18           ng/kg Average of water column. Goldberg et al. 1986
Seawater 77 Ir 0.002             Elemental average concentrations of the deep Atlantic and deep Pacific waters summarized by Whitfield & Turner 1987.  Li 1991 Whitfield & Turner 1987
Goldberg et al. 1986
Sera de Mage Eucrite 77 Ir 2.2           ppt Major, minor and trace element abundances as found in Eucrites from Serra de Mage (Brazil).  Sample analyzed by INAA at University of Oregon. Serra de Mage has a relatively high, but variable, plagioclase content as compared to other Eucrites.  The calcic nature of this plagioclase makes Serra de Mage perhaps the best meteoric analogue to lunar anorthosites and ancient terrestrial calcic anorthosites. Morgan et al. 1978
Sera de Mage Eucrite 77 Ir 53           ppb Suspected of contamination. Laul et al. 1972
Sera de Mage Eucrite 77 Ir 53           ppb Elemental abundance of the Serra de Mag¿ meteorite.  Classified as an unbrecciated eucrite, the sample used was a powder which had been reconstituted in the original proportions from magnetically separated pyroxene and feldspar fractions. The Ir value of this sample is suspiciously high, which suggests contamination during handling. Laul et al. 1972
Shallowater Aubrite 77 Ir 380           ng/g Trace element compositional data on Shallowater Aubrite. Mittlefehldt 2004 Easton 1985
Keil et al. 1989
Shergotty Meteorite 77 Ir 0.057   0.025       ppb Mars elemental abundances as given by Shergotty meteorite (basalitc shergottite) as given in Lodders 1988. Mars elemental abundances as given by Shergotty meteorite, which is a basalitc shergottite, as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
Shergotty Shergottite 77 Ir 1.55           ppb Elemental abundance of the Shergotty meteorite.  Classified as a Shergottite, the sample itself consists of material from one or several chips between 500 and 300 mg. No cleaning was attempted prior to irradiation. Laul et al. 1972
Silicate Earth 77 Ir 0.003           µg/g Compostioinal models for the bulk Earth, core and silicate Earth are modified after McDonough & Sun (1995). McDonough 1998
Silicate Earth 77 Ir 3.2   0.96       ppb Pyrolite model for the silicate Earth composition based on peridotites, komatiites and basalts. Error estimate is subjective. McDonough & Sun 1995
Silicate Earth 77 Ir 0.003           ppm Composition of the Silicate Earth as given by elemental abundances in ppm (and wt%). McDonough 2004
Solar Photosphere 77 Ir 1.35   0.1         Abundances in Solar Photosphere; in original table: log N(H) = 12.00. Uncertain standard deviation. Anders & Grevesse 1989
Solar Photosphere 77 Ir 1.35   0.1         Elemental solar photospheric abundances as given by various references. Values are defined as uncertain by Grevesse and Sauval 1998. Palme & Jones 2004 Grevesse & Sauval 1998
Solar System 77 Ir 0.66   0.04158     35   Anders & Ebihara 1982
Solar System 77 Ir 0.661   0.04032     36   Solar atomic abundances based on an average of C1 chondrites. Values are not normalised to 100% but they are relative to 10E6 Silica atoms. Anders & Grevesse 1989
Solar System 77 Ir 0.72             Anders & Ebihara 1982 Cameron 1982
Solid Earth 77 Ir 0.9           µg/g Compostioinal models for the bulk Earth, core and silicate Earth are modified after McDonough & Sun (1995). McDonough 1998
Solid Earth 77 Ir 0.9           ppm Bulk elemental composition of the Solid Earth with concentrations given in ppm (and wt% where noted). McDonough 2004
Spinel Peridotites 77 Ir 3.7 3 0.9     34 ppb McDonough 1990
Spinel Peridotites 77 Ir   3.7         ppm McDonough 1991 Maaloe & Aoki 1975
Jordan 1979
Boyd 1989
McDonough 1990
Spinel Peridotites   Ni/Ir 600000   140000         McDonough 1991
Stannern Trend Eucrites 77 Ir 0.12           ppb Elemental abundance of the Stannern  meteorite sample 2.  Classified as a eucrite the sample was taken from a region of the meteorite that has a pure white/grey color.  Conversley to sample 1, this sample has lower abundances of trace elements. Laul et al. 1972
Stannern Trend Eucrites 77 Ir 0.12           ppb Laul et al. 1972
Upper Continental Crust 77 Ir 0.02           ppb Taylor & McLennan 1995
Upper Continental Crust 77 Ir 0.022           ng/g Estimates of trace element compositions of the Upper Continental Crust. These values are taken from Peucker-Ehrenbrink and Jahn 2001 and represent estimates derived from sedimentary and loess data. Rudnick & Gao 2004 Peucker-Eherenbrink & Jahn 2001
Upper Continental Crust 77 Ir 0.02           ng/g Estimates of trace element compositions of the Upper Continental Crust. These values are taken from Taylor and McLennan 1985 & 1995 and represent estimates derived from sedimentary and loess data. Rudnick & Gao 2004 Taylor & McLennan 1985
Taylor & McLennan 1995
Upper Continental Crust 77 Ir 0.022           ng/g Recommended composition of the Upper Continental Crust as given by various sources which are listed in Table 1 and 2 of Rudnick and Gao 2004 as well as in the text. Rudnick & Gao 2004
Upper Continental Crust 77 Ir 0.02           ng/g Estimates of trace element compositions of the Upper Continental Crust. These values are taken from Shaw et al. 1967 & 1976 and represent averages from surface exposures. Rudnick & Gao 2004 Shaw et al. 1967
Shaw et al. 1976
Upper Continental Crust 77 Ir 0.022   0.007       ng/g Recommended composition of the Upper Continental Crust as given by various sources which are listed in Table 1 and 2 of Rudnick and Gao 2004 as well as in the text. Rudnick & Gao 2004 see text
Ureilite Primitive Achondrites 77 Ir 159           ppm Elemental abundance range of urelites as taken from all achondritic meteorites as found in Mason 1971. Abundances were obtained by INAA (Instrumental Neutron Activation Analysis). Boynton et al. 1976 Mason 1971
Ureilite Primitive Achondrites 77 Ir 240           ppm Elemental abundance range of urelites as taken from all achondritic meteorites as found in Mason 1971. Abundances were obtained by INAA (Instrumental Neutron Activation Analysis). Boynton et al. 1976 Mason 1971
Ureilite Rock Metal 77 Ir         2.3 5 ppm Low Iridium values indicative of bulk rock values. Janssens et al. 1987
Ureilite Vein Metal 77 Ir 36         5 ppm High Iridium values indicative of vein material. Janssens et al. 1987
Washougal Howardite 77 Ir 17           ppb Elemental abundance of the Washougal meteorite.  Classified as a Howardite, the sample itself consists of material from one or several chips between 500 and 300 mg. No cleaning was attempted prior to irradiation. Laul et al. 1972
Watson IIE Iron 77 Ir 29.2           ng/g Trace element compositional data on Watson IIE Iron. Mittlefehldt 2004 Olsen et al. 1994
Winonaite Pontlyfni 77 Ir 586           ng/g Trace element compositional data on the Pontlyfni Winonaite. Mittlefehldt 2004 Graham et al. 1977
Davis et al. 1977
Winonaite Tierra Blanca 77 Ir 1140           ng/g Trace element compositional data on Tierra Blanca Winonaite. Mittlefehldt 2004 Kallemeyn & Wasson 1985
Jarosweich 1990
Y-791491 Lodranite 77 Ir 2020           ng/g Trace element compositional data on Lodranite Y-791491. Mittlefehldt 2004 Weigel et al. 1999
Zagami Shergottite 77 Ir 0.1           ppb Elemental abundance of the Zagami meteorite.  Classified as a Shergottite, the sample itself consists of material from one or several chips between 500 and 300 mg. No cleaning was attempted prior to irradiation. Laul et al. 1972
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