Glaucodot
A valid IMA mineral species - grandfathered
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About Glaucodot
Formula:
(Co0.50Fe0.50)AsS
Colour:
Grayish tin-white to reddish silver-white
Lustre:
Metallic
Hardness:
5
Specific Gravity:
6.055
Crystal System:
Orthorhombic
Member of:
Name:
Named in 1849 by August Breithaupt and Karl Friedrich Plattner from the Greek γλαÏ
ÎșÏÏ for "sky-blue" and ÎŽÎŻÎŽÏ "to give", because of its use in making blue smalt glass (blue color caused by Co2+).
Type Locality:
See also the chemically similar Cobaltite (ideally CoAsS) and Alloclasite (richer in Co than glaucodot). Compare 'UM1966-01-As:CoNiS'.
Unique Identifiers
Mindat ID:
1709
Long-form identifier:
mindat:1:1:1709:7
GUID
(UUID V4):
(UUID V4):
40ad5e4d-fa47-42f3-a7d3-3eaed68fc100
IMA Classification of Glaucodot
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
(Co0.5Fe0.5)AsS
Classification of Glaucodot
2.EB.10c
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 : 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.
2.12.6.1
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.10.17
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
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
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Gl | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Gl | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185â187 doi:10.2138/am.2010.3371 |
Gl | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Glaucodot
Metallic
Transparency:
Opaque
Colour:
Grayish tin-white to reddish silver-white
Streak:
Black
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {010}, less so on {101}
Perfect on {010}, less so on {101}
Fracture:
Irregular/Uneven
Density:
6.055 g/cm3 (Measured) 6.155 g/cm3 (Calculated)
Optical Data of Glaucodot
Anisotropism:
Distinct - less than arsenopyrite
Pleochroism:
Visible
Comments:
Less distinct than arsenopyrite
Chemistry of Glaucodot
Mindat Formula:
(Co0.50Fe0.50)AsS
Elements listed:
Common Impurities:
Ni
Crystallography of Glaucodot
Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Pmn21
Cell Parameters:
a = 14.158(1) Å, b = 5.6462(4) Å, c = 3.3196(2) Å
Ratio:
a:b:c = 2.508 : 1 : 0.588
Unit Cell V:
265.37 Ă
Âł
Z:
6
Morphology:
Prismatic, massive
Twinning:
On {101}, on {012} forming cruciform penetration twins, trillings.
Comment:
Space group Pn21m (other work gives space group Pnma).
Crystallographic forms of Glaucodot
Crystal Atlas:
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0004616 | Glaucodot | Yang H, Downs R T (2008) Crystal structure of glaucodot, (Co,Fe)AsS, and its relationships to marcasite and arsenopyrite American Mineralogist 93 1183-1186 | 2008 | Hakansboda, Lindesberg, Vastmanland, Sweden | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.64 Ă | (10) |
3.02 Ă | (5) |
2.84 Ă | (10) |
2.72 Ă | (100) |
2.45 Ă | (80) |
2.42 Ă | (70) |
2.18 Ă | (10) |
2.13 Ă | (5) |
2.02 Ă | (5) |
1.963 Ă | (20) |
1.827 Ă | (90) |
1.757 Ă | (20) |
1.669 Ă | (30) |
Comments:
ICDD 5.643
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-đ alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Geological Setting:
Deep seated, high temperature hydrothermal deposits.
Type Occurrence of Glaucodot
Synonyms of Glaucodot
Other Language Names for Glaucodot
German:Akontit
Glaucodotit
Glaukodot
Glaucodotit
Glaukodot
Italian:Glaucodoto
Polish:Glaukodot
Simplified Chinese:éŽçĄ«ç ·éçż
éçĄ«ç ·éŽçż
éçĄ«ç ·éŽçż
Spanish:Glaucodotita
Ukrainian:ĐлаŃĐșĐŸĐŽĐŸŃ
Relationship of Glaucodot to other Species
Member of:
Other Members of this group:
Arsenopyrite | FeAsS | Mon. 2/m : P21/b |
Gudmundite | FeSbS | Mon. 2/m : P21/b |
Osarsite | (Os,Ru)AsS | Mon. |
Ruarsite | (Ru,Os)AsS | Mon. |
Common Associates
Associated Minerals Based on Photo Data:
16 photos of Glaucodot associated with Pyrrhotite | Fe1-xS |
13 photos of Glaucodot associated with Chalcopyrite | CuFeS2 |
3 photos of Glaucodot associated with Quartz | SiO2 |
2 photos of Glaucodot associated with Axinite Group | |
2 photos of Glaucodot associated with Cobaltite | CoAsS |
2 photos of Glaucodot associated with Molybdenite | MoS2 |
1 photo of Glaucodot associated with Carminite | PbFe3+2(AsO4)2(OH)2 |
1 photo of Glaucodot associated with Beudantite | PbFe3(AsO4)(SO4)(OH)6 |
1 photo of Glaucodot associated with Marcasite | FeS2 |
1 photo of Glaucodot associated with Safflorite | (Co,Ni,Fe)As2 |
Related Minerals - Strunz-mindat Grouping
2.EB. | Iridarsenite | (Ir,Ru)As2 |
2.EB. | Selenolaurite | RuSe2 |
2.EB. | Andrieslombaardite | RhSbS |
2.EB. | Kanatzidisite | (SbBiS3)2Te2 |
2.EB.05a | Aurostibite | AuSb2 |
2.EB.05b | Bambollaite | Cu(Se,Te)2 |
2.EB.05a | Cattierite | CoS2 |
2.EB.05a | Erlichmanite | OsS2 |
2.EB.05a | Fukuchilite | Cu3FeS8 |
2.EB.05a | Geversite | PtSb2 |
2.EB.05a | Hauerite | MnS2 |
2.EB.05a | Insizwaite | Pt(Bi,Sb)2 |
2.EB.05a | Krut'aite | CuSe2 |
2.EB.05a | Laurite | RuS2 |
2.EB.05a | Penroseite | (Ni,Co,Cu)Se2 |
2.EB.05a | Pyrite | FeS2 |
2.EB.05a | Sperrylite | PtAs2 |
2.EB.05a | Trogtalite | CoSe2 |
2.EB.05a | Vaesite | NiS2 |
2.EB.05a | VillamanĂnite | (Cu,Ni,Co,Fe)S2 |
2.EB.05a | Dzharkenite | FeSe2 |
2.EB.05a | Gaotaiite | Ir3Te8 |
2.EB.05a v | Cayeuxite | |
2.EB.10b | Alloclasite | Co1-xFexAsS |
2.EB.10d | Costibite | CoSbS |
2.EB.10a | Ferroselite | FeSe2 |
2.EB.10a | Frohbergite | FeTe2 |
2.EB.10a | Kullerudite | NiSe2 |
2.EB.10a | Marcasite | FeS2 |
2.EB.10a | Mattagamite | CoTe2 |
2.EB.10e | Paracostibite | CoSbS |
2.EB.10e | Pararammelsbergite | NiAs2 |
2.EB.10f | Oenite | CoSbAs |
2.EB.10a | PetĆĂÄekite | CuSe2 |
2.EB.15a | Anduoite | (Ru,Os)As2 |
2.EB.15a | Clinosafflorite | CoAs2 |
2.EB.15a | Löllingite | FeAs2 |
2.EB.15a | Nisbite | NiSb2 |
2.EB.15a | Omeiite | (Os,Ru)As2 |
2.EB.15c | Paxite | CuAs2 |
2.EB.15a | Rammelsbergite | NiAs2 |
2.EB.15a | Safflorite | (Co,Ni,Fe)As2 |
2.EB.15b | SeinÀjokite | (Fe,Ni)(Sb,As)2 |
2.EB.20 | Arsenopyrite | FeAsS |
2.EB.20 | Gudmundite | FeSbS |
2.EB.20 | Osarsite | (Os,Ru)AsS |
2.EB.20 | Ruarsite | (Ru,Os)AsS |
2.EB.25 va | Antimony-bearing Gersdorffite | Ni(As,Sb)S |
2.EB.25 | Cobaltite | CoAsS |
2.EB.25 | Gersdorffite | NiAsS |
2.EB.25 | Hollingworthite | (Rh,Pt,Pd)AsS |
2.EB.25 | Irarsite | (Ir,Ru,Rh,Pt)AsS |
2.EB.25 | Jolliffeite | NiAsSe |
2.EB.25 | Krutovite | NiAs2 |
2.EB.25 | Maslovite | PtBiTe |
2.EB.25 | Michenerite | PdBiTe |
2.EB.25 | Padmaite | PdBiSe |
2.EB.25 | Platarsite | Pt(As,S)2 |
2.EB.25 | Testibiopalladite | PdSbTe |
2.EB.25 | Tolovkite | IrSbS |
2.EB.25 | Ullmannite | NiSbS |
2.EB.25 | Willyamite | CoSbS |
2.EB.25 | Changchengite | IrBiS |
2.EB.25 | Mayingite | IrBiTe |
2.EB.25 | Kalungaite | PdAsSe |
2.EB.25 | Milotaite | PdSbSe |
2.EB.25 | Paragersdorffite | Ni(As,S)2 |
2.EB.25 | Orthogersdorffite | NiAsS |
2.EB.25 | KvaÄekite | NiSbSe |
2.EB.30 | Urvantsevite | Pd(Bi,Pb)2 |
2.EB.35 | Rheniite | ReS2 |
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.
Glaucodot in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Glaucodot
mindat.org URL:
https://www.mindat.org/min-1709.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Glaucodot
Reference List:
Yang, H., Downs, R. T. (2008) Crystal structure of glaucodot, (Co,Fe)AsS, and its relationships to marcasite and arsenopyrite. American Mineralogist, 93 (7) 1183-1186 doi:10.2138/am.2008.2966 [Formula: (Co0.52Fe0.47Ni0.01)ÎŁ=1As1.00S1.00.]
Localities for Glaucodot
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Argentina | |
| Brodtkorb (2002) |
Atlantic Ocean | |
| Firstova et al. (2019) |
Australia | |
| Rec. Geol. Survey +3 other references |
| Vera Munro-Smith (2006) |
| Croxford (1974) |
| Exploration and Mining Geology +5 other references |
| Munro-Smith et al. +1 other reference |
| Vera Munro-Smith (2006) |
| Croxford (1974) |
| Record of Mines-Summary Card No:60 |
| Noble R.J. +1 other reference |
Austria | |
| Lewandowski et al. (2006) |
| Seemann et al. (1987) +1 other reference |
| Auer (2020) |
| - (Pitztal, Tirol) +1 other reference |
| Wenger (1979) |
Lapis 19 (7/8) | |
| Tropper et al. (2011) |
Azerbaijan | |
| Pavel.M. Kartashov (n.d.) +1 other reference |
Brazil | |
| Teixeira (2014) |
Bulgaria | |
| Damyanov (1998) |
Canada | |
| Montgomery (n.d.) |
| Montgomery (n.d.) +1 other reference |
| Amer. Mineral. (1969) +1 other reference |
| Blackadar (1981) |
| Goad et al. (1999) |
| Lang (1952) +1 other reference |
Lang (1952) | |
Lang (1952) | |
Kidd et al. (1935) | |
Lang (1952) | |
Rich et al. (1977) | |
| Haysom +2 other references |
| Warren (2013) |
| [www.ontariominerals.com] +2 other references |
| Petruk et al. (1969) |
| Reiner Mielke 2014 |
Petruk (1971) | |
| Robinson et al. (1996) |
| www.ir.gov.sk.ca (2003) |
Chile (TL) | |
| Ann.Phys.Chem. (1849) |
| Richard Gunter specimen ( purchased from Dr. George Robinson in 1976) |
| Richard Gunter Collection |
La Mineria del Cobalto en Chile (1937) | |
China | |
| LIU et al. (2021) |
| Xiong et al. (2022) |
| Yanmei Zhang and Xiyou Liu (2011) |
| Lianxing Gu et al. (2007) |
| Xingyu Yang (1982) |
| Bugao Xue (1995) |
Czech Republic | |
| Ć kĂĄcha et al. (2021) |
| Lapis 2002 (7/8) |
| Sejkora et al. (2007) |
| DolnĂÄek et al. (2021) |
Finland | |
| Hautala (1980) |
| Eilu (2003) |
| Placencia-GĂłmez et al. (2010) |
| Tuovinen Lauri |
France | |
| P&T N°23-24 et al. (Haut-Rhin) |
Wittern et al. (Cologne) | |
Paul De Bondt | |
Pierre et Terre 1982 | |
| Minéraux et mines du massif Vosgien |
Wittern et al. (Cologne) | |
| Sur la minéralisation cobalto-nickelifÚre de BeyrÚde-Jumet prÚs de Sarrancolin (Hautes Pyrénées) |
| R. Pierrot |
Germany | |
| Walenta (1992) |
| WeiĂ (1990) |
| WeiĂ (1990) |
| Henrich (2008) |
| |
| WeiĂ (1990) |
Greece | |
| Rieck et al. (2022) |
Hungary | |
| SzakĂĄll & JĂĄnosi. Minerals of Hungary |
| SzakĂĄll et al. (1996) |
Indonesia | |
| Dana et al. (2022) |
Italy | |
| Vergani F. (2019) |
| Stara et al. (1999) |
| Caboni et al. (2018) |
| Cocco et al. (2022) |
Japan | |
| Rocks & Min.: 22:223. |
| Matsueda (1983) |
| Rocks & Min.: 22:223. |
Mexico | |
| Panczner (1987) |
Morocco | |
| Barral et al. (2009) |
| |
| Mezougane et al. (2022) |
Namibia | |
| Gebhard (1999) |
New Zealand | |
| a coincidental trapping of fluids being ... +1 other reference |
Norway | |
| Neumann (1985) +1 other reference |
| Antun (1967) |
Pacific Ocean | |
| Eos Trans. AGU (48) |
Papua New Guinea | |
| Noku et al. (2012) |
Poland | |
| Mochnacka et al. (2015) |
| Lis et al. (1986) |
PiestrzyĆski A. et al. (electrum) | |
| Mikulski (2013) |
Portugal | |
| Pedro Alves collection and analytical ... |
| Cabri et al. (1998) |
| Pedro Alves collection and analytical ... |
Romania | |
| Ciobanu et al. (2006) |
| Singer et al. (2008) |
SzakĂĄll (2002) | |
| Hirtopanu et al. (2015) |
| HĂźrtopanu (1997) +1 other reference |
Russia | |
| Gvozdev et al. (2013) |
| Novakov et al. (2021) |
| AA et al. (2021) |
| Korostelev et al. (2016) |
| Goryachev et al. (2008) |
Goryachev et al. (2014) | |
| Kalinin (2021) |
| Gvozdev et al. (2016) |
| Ivashchenko et al. (2011, September) |
Ivashchenko et al. (2011, September) | |
Ivashchenko et al. (2011, September) | |
| Ivashchenko et al. (2011, September) |
| Ivashchenko et al. (2018, June) +1 other reference |
| Gamyanin et al. (2015) |
Volokhin et al. (2016) | |
| Azovskova et al. (2013, January) |
| Maslennikov et al. (2013) |
| Gasâkov (2008) |
USGS Open File Report 2005-1252 p173 | |
| Prokofâev et al. (2007) |
Slovakia | |
| KodÄra (1986) |
| KodÄra (1986) |
KodÄra (1986) | |
| KodÄra (1986) |
| KodÄra (1986) |
| KodÄra (1986) |
| KodÄra (1986) |
| PauliĆĄ P. |
HĂĄber et al. (SGR) | |
HĂĄber M. (1969) | |
KodÄra (1986) | |
| KodÄra (1986) |
| KodÄra (1986) |
KodÄra (1986) | |
KodÄra (1986) | |
KodÄra (1986) | |
| KodÄra (1986) |
| KodÄra (1986) |
Grecula (1995) | |
| KodÄra (1986) |
| Peterec D. et al. (KoĆĄice) |
KodÄra (1986) | |
Grecula (1995) | |
KodÄra (1986) | |
| KodÄra (1986) |
KodÄra (1986) | |
KodÄra (1986) | |
ÄuÄa R. et al. ( Kotterbach ) | |
South Africa | |
| Cairncross et al. (1995) |
| R. Liferovich - L. HorvĂĄth p.c. (2004) |
Cairncross et al. (1995) | |
Spain | |
| Tornos et al. (1998) |
| Calvo (2003) |
| Calvo (2008) |
Sweden | |
| |
| |
| Sandström et al. (2011) |
| Adolfsson (1972) +1 other reference |
| Johan Söderhielm |
| Grip (1951) |
Switzerland | |
| Stalder et al. (1998) +1 other reference |
| Stalder et al. (1998) |
Tajikistan | |
| Yatimov et al. (2022) |
UK | |
| R. A. Ixer (1979) +1 other reference |
| Solferino et al. (2021) |
| R. A. Ixer (1979) +1 other reference |
| Day (1999) |
Ukraine | |
| Bobrov et al. (2006, August) +1 other reference |
USA | |
| - (2008) |
| MRDS database Dep. ID #10067567 |
| Eckel et al. (1997) |
| Osterberg (1990) |
| Nikischer (1) |
| Northrop et al. (1996) |
| Northrop et al. (1996) |
| NMGS 38th Field Conference |
| Dana 7:I:324. |
| Mineralogical Society of America - ... |
| Montgomery (Jan & Oct, 1974) +3 other references |
| Valentine et al. (1960) +2 other references |
| Jones +1 other reference |
Quick NavTopAbout GlaucodotUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystallographic forms Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationGlaucodot in petrologyInternet Links References Localities Locality List
Palhal Mine, Branca, Albergaria-a-Velha, Aveiro, Portugal