The first occurrence of platinum group minerals (PGM) in a chromite deposit in the Eastern Desert, Egypt
Identifieur interne : 000E60 ( Main/Exploration ); précédent : 000E59; suivant : 000E61The first occurrence of platinum group minerals (PGM) in a chromite deposit in the Eastern Desert, Egypt
Auteurs : M. A. Elhaddad [Égypte]Source :
- Mineralium Deposita [ 0026-4598 ] ; 1996-07-01.
Abstract
Abstract: The platinum-group mineralogy (PGM) of the chromitite from Gebel Lawi, in the southeastern desert has been investigated. The most abundant base metal Sulfides (BMS) associated with the Lawi chromite are pentlandite, millerite and heazlewoodite. The major platinum-group minerals identified were as follows: laurite (IrOsRu)S2, osmian iridium (OsIr), hollingworthite (RhAsS), tellurian arsenopalladinite (PdTeSbAs), polarite (PdHg) besides cuprian palladian gold (CuPdAu), a Pd-Sb-Hg and HgTe phases. Laurite and osmian iridium occur preferentially in chromite. Os-Ir commonly forms composite PGM with laurite. Hollingworthite and tellurian arsenopalladinite are included within serpentine and, close to the base-metal sulfides, the cuprian palladian gold shares boundaries with chromite. Polarite together with the Pd-Sb-Hg and HgTe phases are embedded in serpentine. Palladium is the most abundant PGE in the Gebel Lawi chromite. A paragenetic sequence of PGM formation is described. Textural evidence indicates that Os-, Ir- and Ru-bearing PGM formed early and were followed by Rh- and Pd-bearing PGM. The concentration of all five PGE could be magmatic, but much of the PGE mineralogy except for laurite and osmian iridium in the center of chromite grains, has been modified by subsequent processes. At later stages, the environment became Te-, Sb-, As- and Hg-rich, which finally led to the formation of low-temperature alteration minerals.
Url:
DOI: 10.1007/BF00189191
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000D34
- to stream Istex, to step Curation: 000933
- to stream Istex, to step Checkpoint: 000805
- to stream Main, to step Merge: 000F13
- to stream Main, to step Curation: 000E60
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">The first occurrence of platinum group minerals (PGM) in a chromite deposit in the Eastern Desert, Egypt</title><author><name sortKey="Elhaddad, M A" sort="Elhaddad, M A" uniqKey="Elhaddad M" first="M. A." last="Elhaddad">M. A. Elhaddad</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:365C3505C1279DC7220C7EB0C310BE22EC1FDD74</idno><date when="1996" year="1996">1996</date><idno type="doi">10.1007/BF00189191</idno><idno type="url">https://api.istex.fr/document/365C3505C1279DC7220C7EB0C310BE22EC1FDD74/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000D34</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000D34</idno><idno type="wicri:Area/Istex/Curation">000933</idno><idno type="wicri:Area/Istex/Checkpoint">000805</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000805</idno><idno type="wicri:doubleKey">0026-4598:1996:Elhaddad M:the:first:occurrence</idno><idno type="wicri:Area/Main/Merge">000F13</idno><idno type="wicri:Area/Main/Curation">000E60</idno><idno type="wicri:Area/Main/Exploration">000E60</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">The first occurrence of platinum group minerals (PGM) in a chromite deposit in the Eastern Desert, Egypt</title><author><name sortKey="Elhaddad, M A" sort="Elhaddad, M A" uniqKey="Elhaddad M" first="M. A." last="Elhaddad">M. A. Elhaddad</name><affiliation wicri:level="1"><country xml:lang="fr">Égypte</country><wicri:regionArea>Geology Department, Faculty of Science, Assiut University, Assiut</wicri:regionArea><wicri:noRegion>Assiut</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Mineralium Deposita</title><title level="j" type="sub">International Journal of Geology, Mineralogy and Geochemistry of Mineral Deposits</title><title level="j" type="abbrev">Mineral. Deposita</title><idno type="ISSN">0026-4598</idno><idno type="eISSN">1432-1866</idno><imprint><publisher>Springer-Verlag</publisher><pubPlace>Berlin/Heidelberg</pubPlace><date type="published" when="1996-07-01">1996-07-01</date><biblScope unit="volume">31</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="439">439</biblScope><biblScope unit="page" to="445">445</biblScope></imprint><idno type="ISSN">0026-4598</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0026-4598</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: The platinum-group mineralogy (PGM) of the chromitite from Gebel Lawi, in the southeastern desert has been investigated. The most abundant base metal Sulfides (BMS) associated with the Lawi chromite are pentlandite, millerite and heazlewoodite. The major platinum-group minerals identified were as follows: laurite (IrOsRu)S2, osmian iridium (OsIr), hollingworthite (RhAsS), tellurian arsenopalladinite (PdTeSbAs), polarite (PdHg) besides cuprian palladian gold (CuPdAu), a Pd-Sb-Hg and HgTe phases. Laurite and osmian iridium occur preferentially in chromite. Os-Ir commonly forms composite PGM with laurite. Hollingworthite and tellurian arsenopalladinite are included within serpentine and, close to the base-metal sulfides, the cuprian palladian gold shares boundaries with chromite. Polarite together with the Pd-Sb-Hg and HgTe phases are embedded in serpentine. Palladium is the most abundant PGE in the Gebel Lawi chromite. A paragenetic sequence of PGM formation is described. Textural evidence indicates that Os-, Ir- and Ru-bearing PGM formed early and were followed by Rh- and Pd-bearing PGM. The concentration of all five PGE could be magmatic, but much of the PGE mineralogy except for laurite and osmian iridium in the center of chromite grains, has been modified by subsequent processes. At later stages, the environment became Te-, Sb-, As- and Hg-rich, which finally led to the formation of low-temperature alteration minerals.</div></front></TEI><affiliations><list><country><li>Égypte</li></country></list><tree><country name="Égypte"><noRegion><name sortKey="Elhaddad, M A" sort="Elhaddad, M A" uniqKey="Elhaddad M" first="M. A." last="Elhaddad">M. A. Elhaddad</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/NickelMaghrebV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000E60 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000E60 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Terre
|area= NickelMaghrebV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:365C3505C1279DC7220C7EB0C310BE22EC1FDD74
|texte= The first occurrence of platinum group minerals (PGM) in a chromite deposit in the Eastern Desert, Egypt
}}
| This area was generated with Dilib version V0.6.27. |  |