First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil
Abstract A kitagohaite grain, measuring approximately 1.0 mm, was retrieved from an alluvial gold gravity concentrate from the southeastern Quadrilátero Ferrífero (QFe), Mariana, Brazil. The grain exhibits a cubic structure, whitish-steel-gray, and has a metallic luster. It is composed of Wt. 94.42%...
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| Format: | Article |
| Language: | English |
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Fundação Gorceix
2023-12-01
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| Series: | REM: International Engineering Journal |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2024000100083&lng=en&tlng=en |
| _version_ | 1827579764107378688 |
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| author | Cristiano Sampaio Herminio Arias Nalini Jr. Cristiane Paula de Castro Gonçalves Geraldo Magela Santos Ana Ramalho Alkmim |
| author_facet | Cristiano Sampaio Herminio Arias Nalini Jr. Cristiane Paula de Castro Gonçalves Geraldo Magela Santos Ana Ramalho Alkmim |
| author_sort | Cristiano Sampaio |
| collection | DOAJ |
| description | Abstract A kitagohaite grain, measuring approximately 1.0 mm, was retrieved from an alluvial gold gravity concentrate from the southeastern Quadrilátero Ferrífero (QFe), Mariana, Brazil. The grain exhibits a cubic structure, whitish-steel-gray, and has a metallic luster. It is composed of Wt. 94.42% Pt and 5.56% Cu (n=9), yielding the empirical formula Pt6.78Cu1.22. This groundbreaking discovery marks the first documented occurrence of kitagohaite in South America. This hydrothermal deposition of kitagohaite indicates that its mineralization is constrained to temperatures <500º C, as inferred by the stability of synthetic Pt7Cu. |
| first_indexed | 2024-03-08T22:08:42Z |
| format | Article |
| id | doaj.art-aab4f05524f740cb856a412702385d2c |
| institution | Directory Open Access Journal |
| issn | 2448-167X |
| language | English |
| last_indexed | 2024-03-08T22:08:42Z |
| publishDate | 2023-12-01 |
| publisher | Fundação Gorceix |
| record_format | Article |
| series | REM: International Engineering Journal |
| spelling | doaj.art-aab4f05524f740cb856a412702385d2c2023-12-19T07:50:31ZengFundação GorceixREM: International Engineering Journal2448-167X2023-12-01771838810.1590/0370-44672023770030First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, BrazilCristiano Sampaiohttps://orcid.org/0000-0002-4325-3169Herminio Arias Nalini Jr.https://orcid.org/0000-0001-8631-9693Cristiane Paula de Castro Gonçalveshttps://orcid.org/0000-0002-9885-0980Geraldo Magela Santoshttps://orcid.org/0000-0002-0797-7098Ana Ramalho Alkmimhttps://orcid.org/0000-0001-7835-2151Abstract A kitagohaite grain, measuring approximately 1.0 mm, was retrieved from an alluvial gold gravity concentrate from the southeastern Quadrilátero Ferrífero (QFe), Mariana, Brazil. The grain exhibits a cubic structure, whitish-steel-gray, and has a metallic luster. It is composed of Wt. 94.42% Pt and 5.56% Cu (n=9), yielding the empirical formula Pt6.78Cu1.22. This groundbreaking discovery marks the first documented occurrence of kitagohaite in South America. This hydrothermal deposition of kitagohaite indicates that its mineralization is constrained to temperatures <500º C, as inferred by the stability of synthetic Pt7Cu.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2024000100083&lng=en&tlng=enkitagohaitePt Cuplatinum grainjacutingaQuadrilátero Ferrífero |
| spellingShingle | Cristiano Sampaio Herminio Arias Nalini Jr. Cristiane Paula de Castro Gonçalves Geraldo Magela Santos Ana Ramalho Alkmim First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil REM: International Engineering Journal kitagohaite Pt Cu platinum grain jacutinga Quadrilátero Ferrífero |
| title | First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil |
| title_full | First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil |
| title_fullStr | First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil |
| title_full_unstemmed | First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil |
| title_short | First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil |
| title_sort | first occurrence of kitagohaite pt7cu from the quadrilatero ferrifero brazil |
| topic | kitagohaite Pt Cu platinum grain jacutinga Quadrilátero Ferrífero |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2024000100083&lng=en&tlng=en |
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