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Clinosafflorite

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Formula:
CoAs2
May contain minor Fe and/or Ni replacing Co.
System:
Monoclinic
Colour:
Tin-white
Hardness:
4½ - 5
Name:
In reference to monoclinic symmetry and safflorite composition.
Dimorph of:
"Chemical analyses of various natural and synthetic [safflorite] samples reveal that Pnnm safflorite always contains some amounts of Fe and Ni, whereas materials with 80–100% (mole) CoAs2 crystallize in monoclinic P21/c symmetry [= clinosafflorite] (Holmes, 1947; Swanson et al., 1966; Radcliffe & Berry, 1971)." (Yang et al., 2008).

Classification of Clinosafflorite

Approved
2.EB.15a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
2.12.4.6

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.10.11

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
10 : Sulphides etc. of Co
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First Recorded Occurrence of Clinosafflorite

Year of Discovery:
1971
Geological Setting of First Recorded Material:
Hydrothermal Co-Ni-As veins.

Occurrences of Clinosafflorite

Geological Setting:
In hydrothermal veins

Physical Properties of Clinosafflorite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Tin-white
Hardness (Mohs):
4½ - 5
Hardness (Vickers):
VHN100=719 - 875 kg/mm2
Density:
7.46 g/cm3 (Calculated)

Crystallography of Clinosafflorite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 5.04Å, b = 5.862Å, c = 3.139Å
β = 90.13°
Ratio:
a:b:c = 0.86 : 1 : 0.535
Unit Cell Volume:
V 92.74 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Fine-grained intergrowths.

Chemical Properties of Clinosafflorite

Formula:
CoAs2

May contain minor Fe and/or Ni replacing Co.
Essential elements:
All elements listed in formula:
Common Impurities:
S

Relationship of Clinosafflorite to other Species

Other Members of Group:
2.EB.05aAurostibiteAuSb2
2.EB.05bBambollaiteCu(Se,Te)2
2.EB.05aCattieriteCoS2
2.EB.05aErlichmaniteOsS2
2.EB.05aFukuchiliteCu3FeS8
2.EB.05aGeversitePtSb2
2.EB.05aHaueriteMnS2
2.EB.05aInsizwaitePt(Bi,Sb)2
2.EB.05aKrut'aiteCuSe2
2.EB.05aLauriteRuS2
2.EB.05aPenroseite(Ni,Co,Cu)Se2
2.EB.05aPyriteFeS2
2.EB.05aSperrylitePtAs2
2.EB.05aTrogtaliteCoSe2
2.EB.05aVaesiteNiS2
2.EB.05aVillamaninite(Cu,Ni,Co,Fe)S2
2.EB.05aDzharkeniteFeSe2
2.EB.05aGaotaiiteIr3Te8
2.EB.10bAlloclasiteCo1-xFexAsS
2.EB.10dCostibiteCoSbS
2.EB.10aFerroseliteFeSe2
2.EB.10aFrohbergiteFeTe2
2.EB.10cGlaucodot(Co0.50Fe0.50)AsS
2.EB.10aKulleruditeNiSe2
2.EB.10aMarcasiteFeS2
2.EB.10aMattagamiteCoTe2
2.EB.10eParacostibiteCoSbS
2.EB.10ePararammelsbergiteNiAs2
2.EB.10fOeniteCoSbAs
2.EB.15aAnduoite(Ru,Os)As2
2.EB.15aLöllingiteFeAs2
2.EB.15aNisbiteNiSb2
2.EB.15aOmeiite(Os,Ru)As2
2.EB.15cPaxiteCuAs2
2.EB.15aRammelsbergiteNiAs2
2.EB.15aSafflorite(Co,Ni,Fe)As2
2.EB.15bSeinäjokite(Fe,Ni)(Sb,As)2
2.EB.20ArsenopyriteFeAsS
2.EB.20GudmunditeFeSbS
2.EB.20Osarsite(Os,Ru)AsS
2.EB.20Ruarsite(Ru,Os)AsS
2.EB.25CobaltiteCoAsS
2.EB.25GersdorffiteNiAsS
2.EB.25Hollingworthite(Rh,Pt,Pd)AsS
2.EB.25Irarsite(Ir,Ru,Rh,Pt)AsS
2.EB.25JolliffeiteNiAsSe
2.EB.25KrutoviteNiAs2
2.EB.25MaslovitePtBiTe
2.EB.25MicheneritePdBiTe
2.EB.25PadmaitePdBiSe
2.EB.25PlatarsitePtAsS
2.EB.25TestibiopalladitePdTe(Sb,Te)
2.EB.25TolovkiteIrSbS
2.EB.25UllmanniteNiSbS
2.EB.25Willyamite(Co,Ni)SbS
2.EB.25ChangchengiteIrBiS
2.EB.25MayingiteIrBiTe
2.EB.25Hollingsworthite
2.EB.25KalungaitePdAsSe
2.EB.25MilotaitePdSbSe
2.EB.30UrvantsevitePd(Bi,Pb)2
2.EB.35RheniiteReS2
3.10.1Cobaltpentlandite(Co,Ni,Fe)9S8
3.10.2LinnaeiteCo2+Co23+S4
3.10.3CattieriteCoS2
3.10.4FrebolditeCoSe
3.10.5BornhardtiteCo2+Co23+Se4
3.10.6TrogtaliteCoSe2
3.10.7Hastite
3.10.8MattagamiteCoTe2
3.10.9Modderite(Co,Fe)As
3.10.10Safflorite(Co,Ni,Fe)As2
3.10.12SkutteruditeCoAs3-x
3.10.13CobaltiteCoAsS
3.10.14ParacostibiteCoSbS
3.10.15CostibiteCoSbS
3.10.16AlloclasiteCo1-xFexAsS
3.10.17Glaucodot(Co0.50Fe0.50)AsS
3.10.18CarrolliteCu(Co,Ni)2S4

Other Names for Clinosafflorite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Clinosafflorite

Reference List:
Darmon, R. & Wintenberger, M. (1966): Structure cristalline de CoAs2. Bulletin de la Société Française de Minéralogie et de Cristallographie 89, 213-215.

Radcliffe, D. & Berry, L.G. (1971): Clinosafflorite: a monoclinic polymorph of safflorite. Canadian Mineralogist 10, 877-881.

Yang, H., Downs, R.T., Eichler, C. (2008): Safflorite, (Co,Ni,Fe)As2, isomorphous with marcasite. Acta Crystallographica, E64, i62.

Internet Links for Clinosafflorite

Localities for Clinosafflorite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada
 
  • Ontario
    • Timiskaming District
      • Cobalt-Gowganda region
RADCLIFFE, D. & BERRY, L.G. (1971): Clinosafflorite: a monoclinic polymorph of safflorite. Canadian Mineralogist 10, 877-881.
          • Gillies Limit
Robert C. Smith, II collection collected underground ~ 1970
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
Lapis 2002(7/8), 63-65
Finland
 
  • Southwestern Finland Region
    • Somero
Eilu, P. (2003). Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003. Rovaniemi, Finland
France
 
  • Alsace
    • Haut-Rhin
      • Ste Marie-aux-Mines (Markirch)
        • Neuenberg
Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
Paul De Bondt
Pierre et Terre 1982
Germany
 
  • Hesse
    • Odenwald
      • Mühltal
        • Nieder-Beerbach
    • Richelsdorf District
      • Süss
        • Richelsdorf Smelter
S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1992
  • Rhineland-Palatinate
    • Palatinate
      • Annweiler am Trifels
        • Waldhambach
http://www.mgas.de/fundstellen/Bergbau-PSL/Mineralien_SNPLH.pdf
  • Saarland
    • Merzig
      • Reimsbach
Thomas Kleser collection
  • Saxony-Anhalt
Wittern: "Mineralfundorte in Deutschland", 2001
  • Saxony
    • Erzgebirge
Andreas Gerstenberg collection
      • Schlema-Hartenstein District
Van King
Mauritania
 
  • Inchiri Region
    • Akjoujt (Akjout; Fort Repoux)
Sakellaris, G.A., Meyer, F.M. (2008) A Metamorphic Origin of the Guelb Moghrein Fe Oxide-Copper-Gold-Cobalt Deposit, Mauritania. http://www.minsoc.ru/2008-1-101-1
Morocco
 
  • Souss-Massa-Draâ Region
    • Ouarzazate Province
      • Tazenakht
Econ Geol (1997) 92:360-367
          • Aït Ahmane
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
          • Tamdrost
Sweden
 
  • Värmland
    • Filipstad
      • Nordmark district
        • Finnshytteberg ore field (Finnshytte)
Handbook of Mineralogy; Canadian Mineralogist Vol. 21, pp. 129-136 (1983)
UK
 
  • Scotland
    • Central Region (Clackmannanshire)
      • Alva
        • Silver Glen
[J.Russell Soc 1998:23]
USA
 
  • Colorado
    • Gunnison Co.
      • Elk Mountain District
Minerals of Colorado (1997) Eckels, E. B.
  • Nevada
    • Churchill Co.
      • Table Mountain District
        • Cottonwood Canyon
          • Bolivia
NBMG Spec. Pub. 31 Minerals of Nevada
    • Humboldt Co.
      • National District
NBMG Spec. Pub. 31 Minerals of Nevada
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