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Campo Formoso ultramafic complex, Bahia, Brazili
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Campo Formoso ultramafic complexComplex
BahiaState
BrazilCountry

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The Campo Formoso stratiform intrusive is part of the Jacurici Complex of Paleoproterozoic age and consists of a tabular body of ultramafic rocks about 40 km long and 100-1100 m wide. It hosts the most prominent chromite deposits of Brazil. At least seven chromitite layers, up to more than 10 m thick, have been discovered in the SW limb of the intrusion, and have been mined at several places.

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Standard Detailed Gallery Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

50 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

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Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Anthophyllite
Formula: ◻{Mg2}{Mg5}(Si8O22)(OH)2
Reference: (2014) 12th International Platinum Symposium p41
Antigorite
Formula: Mg3(Si2O5)(OH)4
Reference: Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Antimony
Formula: Sb
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Bismuthinite
Formula: Bi2S3
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Calcite
Formula: CaCO3
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Chalcopyrite
Formula: CuFeS2
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
'Chlorite Group'
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Chromite
Formula: Fe2+Cr3+2O4
Reference: Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (p. 24).; Zaccarini, F., Garuti, G., and Martin, R.F. (2006) Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta, 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]; 33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Diversity of Platinum group minerals (PGM) in chromitites from Brazil, preliminary results.; ; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Chromite var. Ferrian Chromite
Formula: Fe2+(Cr,Fe3+)2O4
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Chrysotile
Formula: Mg3(Si2O5)(OH)4
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Clinochlore var. Chromium-bearing Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
Reference: Zaccarini, F., Garuti, G., and Martin, R.F. (2006) Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta, 4, 461-469 (https://www.raco.cat/index.php/GeologicaActa/article/download/82415/107526)
Cooperite
Formula: PtS
Reference: Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Dolomite
Formula: CaMg(CO3)2
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Erlichmanite
Formula: OsS2
Reference: 33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Diversity of Platinum group minerals (PGM) in chromitites from Brazil, preliminary results; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
'Fayalite-Forsterite Series'
Reference: (2014) 12th International Platinum Symposium p41
Galena
Formula: PbS
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Goethite
Formula: α-Fe3+O(OH)
Reference: Mota-e-Silva, J., Prichard, H.M., Suárez, S., Ferreira Filho, C.F., Fisher, P.C. (2016): Supergene alteration of platinum-group minerals and formation of Pd-Cu-O and Pd-I-O compounds in the Limoeiro Ni-Cu-(PGE) deposit, Brazil. Canadian Mineralogist: 54: 755-778; http://forum.amiminerals.it/viewtopic.php?f=5&t=13550 (2017)
Heazlewoodite
Formula: Ni3S2
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Hessite
Formula: Ag2Te
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Hollingworthite
Formula: (Rh,Pt,Pd)AsS
Reference: Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
'Hornblende'
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Irarsite
Formula: (Ir,Ru,Rh,Pt)AsS
Reference: 33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Diversity of Platinum group minerals (PGM) in chromitites from Brazil, preliminary results; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Kotulskite
Formula: Pd(Te,Bi)2-x (x ≈ 0.4)
Reference: Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Laurite
Formula: RuS2
Reference: 33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Diversity of Platinum group minerals (PGM) in chromitites from Brazil, preliminary results; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Lizardite
Formula: Mg3(Si2O5)(OH)4
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Magnesite
Formula: MgCO3
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Melonite
Formula: NiTe2
Reference: Mota-e-Silva, J., Prichard, H.M., Suárez, S., Ferreira Filho, C.F., Fisher, P.C. (2016): Supergene alteration of platinum-group minerals and formation of Pd-Cu-O and Pd-I-O compounds in the Limoeiro Ni-Cu-(PGE) deposit, Brazil. Canadian Mineralogist: 54: 755-778; http://forum.amiminerals.it/viewtopic.php?f=5&t=13550 (2017); Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Merenskyite
Formula: PdTe2
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H.M., Suárez, S., Ferreira Filho, C.F., Fisher, P.C. (2016): Supergene alteration of platinum-group minerals and formation of Pd-Cu-O and Pd-I-O compounds in the Limoeiro Ni-Cu-(PGE) deposit, Brazil. Canadian Mineralogist: 54: 755-778; http://forum.amiminerals.it/viewtopic.php?f=5&t=13550 (2017); Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Millerite
Formula: NiS
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
'Monazite'
Formula: (REE/Ce/La/Nd/Sm/Gd)(PO4)
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Monazite-(Ce)
Formula: Ce(PO4)
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Monazite-(La)
Formula: La(PO4)
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Moncheite
Formula: (Pt,Pd)(Te,Bi)2
Reference: Mota-e-Silva, J., Prichard, H.M., Suárez, S., Ferreira Filho, C.F., Fisher, P.C. (2016): Supergene alteration of platinum-group minerals and formation of Pd-Cu-O and Pd-I-O compounds in the Limoeiro Ni-Cu-(PGE) deposit, Brazil. Canadian Mineralogist: 54: 755-778; http://forum.amiminerals.it/viewtopic.php?f=5&t=13550 (2017); Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Opal
Formula: SiO2 · nH2O
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
'Orthopyroxene Subgroup'
Reference: (2014) 12th International Platinum Symposium p41
Osmium
Formula: (Os,Ir,Ru)
Reference: 33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Diversity of Platinum group minerals (PGM) in chromitites from Brazil, preliminary results
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
'Platinum-Group Elements'
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Pyrite
Formula: FeS2
Reference: Mota-e-Silva, J., Prichard, H.M., Suárez, S., Ferreira Filho, C.F., Fisher, P.C. (2016): Supergene alteration of platinum-group minerals and formation of Pd-Cu-O and Pd-I-O compounds in the Limoeiro Ni-Cu-(PGE) deposit, Brazil. Canadian Mineralogist: 54: 755-778; http://forum.amiminerals.it/viewtopic.php?f=5&t=13550 (2017); Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Pyrrhotite
Formula: Fe1-xS
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Quartz
Formula: SiO2
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Ruarsite
Formula: (Ru,Os)AsS
Reference: 33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Diversity of Platinum group minerals (PGM) in chromitites from Brazil, preliminary results; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Rutile
Formula: TiO2
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Reference: Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Sperrylite
Formula: PtAs2
Reference: (2014) 12th International Platinum Symposium p41; Mota-e-Silva, J., Prichard, H. M., Ferreira Filho, C. F., Fisher, P. C., & McDonald, I. (2015). Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50(8), 1007-1029.
Spinel
Formula: MgAl2O4
Reference: (2014) 12th International Platinum Symposium p41
Stibiopalladinite ?
Formula: Pd5Sb2
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Stichtite
Formula: Mg6Cr3+2(OH)16[CO3] · 4H2O
Reference: Boukili, H., Novikoff, A., Besnus, Y., Soubies, F., and Queiroz, C. (1983): Sciences Géologiques 72, 19-28.; F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
Sudburyite ?
Formula: PdSb
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Talc
Formula: Mg3Si4O10(OH)2
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]; Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
Tremolite
Formula: ◻{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85
'Unnamed (Pb-Sb Alloy)'
Formula: Pb-Sb
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
'Unnamed (Pd-I-O Compound)'
Formula: Pd, I, O
Reference: Mota-e-Silva, J., Prichard, H.M., Suárez, S., Ferreira Filho, C.F., Fisher, P.C. (2016): Supergene alteration of platinum-group minerals and formation of Pd-Cu-O and Pd-I-O compounds in the Limoeiro Ni-Cu-(PGE) deposit, Brazil. Canadian Mineralogist: 54: 755-778; http://forum.amiminerals.it/viewtopic.php?f=5&t=13550 (2017)
Violarite
Formula: Fe2+Ni3+2S4
Reference: Mota-e-Silva, J., Prichard, H.M., Suárez, S., Ferreira Filho, C.F., Fisher, P.C. (2016): Supergene alteration of platinum-group minerals and formation of Pd-Cu-O and Pd-I-O compounds in the Limoeiro Ni-Cu-(PGE) deposit, Brazil. Canadian Mineralogist: 54: 755-778; http://forum.amiminerals.it/viewtopic.php?f=5&t=13550 (2017)
Volkonskoite
Formula: Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Reference: F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Antimony1.CA.05Sb
Osmium1.AF.05(Os,Ir,Ru)
Group 2 - Sulphides and Sulfosalts
Bismuthinite2.DB.05Bi2S3
Chalcopyrite2.CB.10aCuFeS2
Cooperite2.CC.35bPtS
Erlichmanite2.EB.05aOsS2
Galena2.CD.10PbS
Heazlewoodite2.BB.05Ni3S2
Hessite2.BA.60Ag2Te
Hollingworthite2.EB.25(Rh,Pt,Pd)AsS
Irarsite2.EB.25(Ir,Ru,Rh,Pt)AsS
Kotulskite2.CC.05Pd(Te,Bi)2-x (x ≈ 0.4)
Laurite2.EB.05aRuS2
Melonite2.EA.20NiTe2
Merenskyite2.EA.20PdTe2
Millerite2.CC.20NiS
Moncheite2.EA.20(Pt,Pd)(Te,Bi)2
Pentlandite2.BB.15(FexNiy)Σ9S8
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe1-xS
Ruarsite2.EB.20(Ru,Os)AsS
Sperrylite2.EB.05aPtAs2
Stibiopalladinite ?2.AC.20aPd5Sb2
Sudburyite ?2.CC.05PdSb
Violarite2.DA.05Fe2+Ni3+2S4
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
var. Ferrian Chromite4.BB.05Fe2+(Cr,Fe3+)2O4
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Magnesite5.AB.05MgCO3
Stichtite5.DA.50Mg6Cr3+2(OH)16[CO3] · 4H2O
Group 8 - Phosphates, Arsenates and Vanadates
Monazite-(Ce)8.AD.50Ce(PO4)
Monazite-(La)8.AD.50La(PO4)
Group 9 - Silicates
Actinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
Anthophyllite9.DD.05◻{Mg2}{Mg5}(Si8O22)(OH)2
Antigorite9.ED.15Mg3(Si2O5)(OH)4
Chrysotile9.ED.15Mg3(Si2O5)(OH)4
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var. Chromium-bearing Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Lizardite9.ED.15Mg3(Si2O5)(OH)4
Nontronite9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Tremolite9.DE.10◻{Ca2}{Mg5}(Si8O22)(OH)2
Volkonskoite9.EC.40Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Hornblende'-
'Monazite'-(REE/Ce/La/Nd/Sm/Gd)(PO4)
'Orthopyroxene Subgroup'-
'Platinum-Group Elements'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'Unnamed (Pb-Sb Alloy)'-Pb-Sb
'Unnamed (Pd-I-O Compound)'-Pd, I, O

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Platinum Group Metals and Alloys
Osmium1.2.2.1(Os,Ir,Ru)
Semi-metals and non-metals
Antimony1.3.1.2Sb
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 5:2
Stibiopalladinite ?2.3.3.1Pd5Sb2
AmBnXp, with (m+n):p = 2:1
Hessite2.4.2.1Ag2Te
AmBnXp, with (m+n):p = 3:2
Heazlewoodite2.5.3.1Ni3S2
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Cooperite2.8.5.1PtS
Galena2.8.1.1PbS
Millerite2.8.16.1NiS
Pyrrhotite2.8.10.1Fe1-xS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 3:4
Violarite2.10.1.8Fe2+Ni3+2S4
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
AmBnXp, with (m+n):p = 1:2
Erlichmanite2.12.1.16OsS2
Hollingworthite2.12.3.8(Rh,Pt,Pd)AsS
Irarsite2.12.3.7(Ir,Ru,Rh,Pt)AsS
Laurite2.12.1.10RuS2
Melonite2.12.14.1NiTe2
Merenskyite2.12.14.4PdTe2
Moncheite2.12.14.3(Pt,Pd)(Te,Bi)2
Pyrite2.12.1.1FeS2
Ruarsite2.12.4.4(Ru,Os)AsS
Sperrylite2.12.1.13PtAs2
Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Magnesite14.1.1.2MgCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16b - HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
Stichtite16b.6.2.2Mg6Cr3+2(OH)16[CO3] · 4H2O
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Monazite-(La)38.4.3.2La(PO4)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Anthophyllite66.1.2.1◻{Mg2}{Mg5}(Si8O22)(OH)2
Tremolite66.1.3a.1◻{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Antigorite71.1.2a.1Mg3(Si2O5)(OH)4
Chrysotile71.1.5.1Mg3(Si2O5)(OH)4
Lizardite71.1.2b.2Mg3(Si2O5)(OH)4
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Sheets of 6-membered rings with 2:1 clays
Nontronite71.3.1a.3Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Volkonskoite71.3.1a.4Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
Actinolite-◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Chlorite Group'-
Chromite
var. Ferrian Chromite
-Fe2+(Cr,Fe3+)2O4
Clinochlore
var. Chromium-bearing Clinochlore
-Mg5(Al,Cr)2Si3O10(OH)8
'Fayalite-Forsterite Series'-
'Hornblende'-
Kaolinite-Al2(Si2O5)(OH)4
Kotulskite-Pd(Te,Bi)2-x (x ≈ 0.4)
'Monazite'-(REE/Ce/La/Nd/Sm/Gd)(PO4)
'Orthopyroxene Subgroup'-
'Platinum-Group Elements'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Sudburyite ?-PdSb
'Unnamed (Pb-Sb Alloy)'-Pb-Sb
'Unnamed (Pd-I-O Compound)'-Pd, I, O

List of minerals for each chemical element

HHydrogen
H Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Goethiteα-Fe3+O(OH)
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
H AntigoriteMg3(Si2O5)(OH)4
H StichtiteMg6Cr23+(OH)16[CO3] · 4H2O
H ApatiteCa5(PO4)3(Cl/F/OH)
H ClinochloreMg5Al(AlSi3O10)(OH)8
H ChrysotileMg3(Si2O5)(OH)4
H LizarditeMg3(Si2O5)(OH)4
H TalcMg3Si4O10(OH)2
H OpalSiO2 · nH2O
H VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
H NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
H KaoliniteAl2(Si2O5)(OH)4
H Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
H Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
H Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
CCarbon
C StichtiteMg6Cr23+(OH)16[CO3] · 4H2O
C MagnesiteMgCO3
C DolomiteCaMg(CO3)2
C CalciteCaCO3
OOxygen
O Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
O PhlogopiteKMg3(AlSi3O10)(OH)2
O SpinelMgAl2O4
O Unnamed (Pd-I-O Compound)Pd, I, O
O Goethiteα-Fe3+O(OH)
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
O MagnetiteFe2+Fe23+O4
O AntigoriteMg3(Si2O5)(OH)4
O ChromiteFe2+Cr23+O4
O StichtiteMg6Cr23+(OH)16[CO3] · 4H2O
O Monazite-(La)La(PO4)
O Monazite-(Ce)Ce(PO4)
O ApatiteCa5(PO4)3(Cl/F/OH)
O ClinochloreMg5Al(AlSi3O10)(OH)8
O ChrysotileMg3(Si2O5)(OH)4
O LizarditeMg3(Si2O5)(OH)4
O MagnesiteMgCO3
O TalcMg3Si4O10(OH)2
O DolomiteCaMg(CO3)2
O OpalSiO2 · nH2O
O QuartzSiO2
O VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
O NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
O KaoliniteAl2(Si2O5)(OH)4
O Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
O Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
O CalciteCaCO3
O Monazite(REE/Ce/La/Nd/Sm/Gd)(PO4)
O RutileTiO2
O Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
O Chromite var. Ferrian ChromiteFe2+(Cr,Fe3+)2O4
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Na NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mg Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg SpinelMgAl2O4
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mg AntigoriteMg3(Si2O5)(OH)4
Mg StichtiteMg6Cr23+(OH)16[CO3] · 4H2O
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg ChrysotileMg3(Si2O5)(OH)4
Mg LizarditeMg3(Si2O5)(OH)4
Mg MagnesiteMgCO3
Mg TalcMg3Si4O10(OH)2
Mg DolomiteCaMg(CO3)2
Mg VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Mg Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Mg Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
Mg Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al SpinelMgAl2O4
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Al NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Al KaoliniteAl2(Si2O5)(OH)4
Al Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
SiSilicon
Si Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Si AntigoriteMg3(Si2O5)(OH)4
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si ChrysotileMg3(Si2O5)(OH)4
Si LizarditeMg3(Si2O5)(OH)4
Si TalcMg3Si4O10(OH)2
Si OpalSiO2 · nH2O
Si QuartzSiO2
Si VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Si NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Si KaoliniteAl2(Si2O5)(OH)4
Si Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Si Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
Si Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
PPhosphorus
P Monazite-(La)La(PO4)
P Monazite-(Ce)Ce(PO4)
P ApatiteCa5(PO4)3(Cl/F/OH)
P Monazite(REE/Ce/La/Nd/Sm/Gd)(PO4)
SSulfur
S PyrrhotiteFe1-xS
S Pentlandite(FexNiy)Σ9S8
S ChalcopyriteCuFeS2
S PyriteFeS2
S ViolariteFe2+Ni23+S4
S CooperitePtS
S Hollingworthite(Rh,Pt,Pd)AsS
S LauriteRuS2
S ErlichmaniteOsS2
S Irarsite(Ir,Ru,Rh,Pt)AsS
S Ruarsite(Ru,Os)AsS
S GalenaPbS
S BismuthiniteBi2S3
S HeazlewooditeNi3S2
S MilleriteNiS
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca DolomiteCaMg(CO3)2
Ca VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Ca Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
Ca CalciteCaCO3
Ca Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
TiTitanium
Ti RutileTiO2
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr StichtiteMg6Cr23+(OH)16[CO3] · 4H2O
Cr VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Cr Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Cr Chromite var. Ferrian ChromiteFe2+(Cr,Fe3+)2O4
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe PyrrhotiteFe1-xS
Fe Pentlandite(FexNiy)Σ9S8
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe ViolariteFe2+Ni23+S4
Fe Goethiteα-Fe3+O(OH)
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Fe MagnetiteFe2+Fe23+O4
Fe ChromiteFe2+Cr23+O4
Fe NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Fe Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
Fe Chromite var. Ferrian ChromiteFe2+(Cr,Fe3+)2O4
NiNickel
Ni Pentlandite(FexNiy)Σ9S8
Ni MeloniteNiTe2
Ni ViolariteFe2+Ni23+S4
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Ni HeazlewooditeNi3S2
Ni MilleriteNiS
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
AsArsenic
As SperrylitePtAs2
As Hollingworthite(Rh,Pt,Pd)AsS
As Irarsite(Ir,Ru,Rh,Pt)AsS
As Ruarsite(Ru,Os)AsS
RuRuthenium
Ru LauriteRuS2
Ru Irarsite(Ir,Ru,Rh,Pt)AsS
Ru Ruarsite(Ru,Os)AsS
Ru Osmium(Os,Ir,Ru)
RhRhodium
Rh Hollingworthite(Rh,Pt,Pd)AsS
Rh Irarsite(Ir,Ru,Rh,Pt)AsS
PdPalladium
Pd MerenskyitePdTe2
Pd Unnamed (Pd-I-O Compound)Pd, I, O
Pd Moncheite(Pt,Pd)(Te,Bi)2
Pd KotulskitePd(Te,Bi)2-x (x ≈ 0.4)
Pd StibiopalladinitePd5Sb2
Pd SudburyitePdSb
AgSilver
Ag HessiteAg2Te
SbAntimony
Sb AntimonySb
Sb Unnamed (Pb-Sb Alloy)Pb-Sb
Sb StibiopalladinitePd5Sb2
Sb SudburyitePdSb
TeTellurium
Te MerenskyitePdTe2
Te HessiteAg2Te
Te MeloniteNiTe2
Te Moncheite(Pt,Pd)(Te,Bi)2
Te KotulskitePd(Te,Bi)2-x (x ≈ 0.4)
IIodine
I Unnamed (Pd-I-O Compound)Pd, I, O
LaLanthanum
La Monazite-(La)La(PO4)
La Monazite(REE/Ce/La/Nd/Sm/Gd)(PO4)
CeCerium
Ce Monazite-(Ce)Ce(PO4)
Ce Monazite(REE/Ce/La/Nd/Sm/Gd)(PO4)
NdNeodymium
Nd Monazite(REE/Ce/La/Nd/Sm/Gd)(PO4)
SmSamarium
Sm Monazite(REE/Ce/La/Nd/Sm/Gd)(PO4)
GdGadolinium
Gd Monazite(REE/Ce/La/Nd/Sm/Gd)(PO4)
OsOsmium
Os ErlichmaniteOsS2
Os Ruarsite(Ru,Os)AsS
Os Osmium(Os,Ir,Ru)
IrIridium
Ir Irarsite(Ir,Ru,Rh,Pt)AsS
Ir Osmium(Os,Ir,Ru)
PtPlatinum
Pt SperrylitePtAs2
Pt Moncheite(Pt,Pd)(Te,Bi)2
Pt CooperitePtS
Pt Irarsite(Ir,Ru,Rh,Pt)AsS
PbLead
Pb GalenaPbS
Pb Unnamed (Pb-Sb Alloy)Pb-Sb
BiBismuth
Bi Moncheite(Pt,Pd)(Te,Bi)2
Bi KotulskitePd(Te,Bi)2-x (x ≈ 0.4)
Bi BismuthiniteBi2S3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 22, 24).
Zaccarini, F., Garuti, G., and Martin, R.F. (2006) Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta, 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Diversity of Platinum group minerals (PGM) in chromitites from Brazil, preliminary results.
Garuti, G., Proenza, J. A., & Zaccarini, F. (2005). Platinum-group element distribution and mineralogy in altered chromitite of the Campo Formoso layered intrusion (Bahia state, Brazil). Geology & Petrology 82-85

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