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Freboldite Mineral Data
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General Freboldite Information
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Chemical Formula: |
CoSe |
Composition: |
Molecular Weight = 137.89 gm |
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Cobalt 42.74 % Co |
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Selenium 57.26 % Se |
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______ |
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100.00 % |
Empirical Formula: |
CoSe |
Environment: |
In dolomite veinlets. |
IMA Status: |
Valid Species (Pre-IMA) 1957 |
Locality: |
From the Trogtal quarry, Steinbruch, and at Rote Berg, St. Andreasberg, Harz. Link to MinDat.org Location Data. |
Name Origin: |
For Professor Georg Frebold of Hannover, Germany. |
Name Pronunciation: |
Freboldite + Pronunciation |
Synonym: |
ICSD 42541 |
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PDF 15-464 |
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Freboldite Image |
Images:
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Freboldite Crystallography
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Axial Ratios: |
a:c = 1:1.4626 |
Cell Dimensions: |
a = 3.61, c = 5.28, Z = 2; V = 59.59 Den(Calc)= 7.68 |
Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
X Ray Diffraction: |
By Intensity(I/Io): 1.066(1), 2.05(1), 9.63(1), |
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Physical Properties of Freboldite
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Cleavage: |
None |
Color: |
Copper red, Pink. |
Diaphaneity: |
Opaque |
Hardness: |
2.5-3 - Finger Nail-Calcite |
Luster: |
Metallic |
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Optical Properties of Freboldite
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RL Anisotrophism: |
Less than nickeline. |
RL Color: |
Similar to nickeline, but more intense violet in oil. |
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Calculated Properties of Freboldite
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Electron Density: |
Bulk Density (Electron Density)=6.79 gm/cc note: Specific Gravity of Freboldite =7.68 gm/cc. |
Fermion Index: |
Fermion Index = 0.04 Boson Index = 0.96 |
Photoelectric: |
PEFreboldite = 61.17 barns/electron U=PEFreboldite x rElectron Density= 415.66 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Freboldite is Not Radioactive |
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Freboldite Classification
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Dana Class: |
02.08.11.10 (02)Sulfides - Including Selenides and Tellurides |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.11)Nickeline Group (Hexagonal: P63/mmc) |
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02.08.11.01 Nickeline NiAs P 63/mmc 6/m 2/m 2/m |
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02.08.11.02 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m |
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02.08.11.03 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m |
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02.08.11.04 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m |
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02.08.11.05 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m |
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02.08.11.06 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m |
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02.08.11.07 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m |
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02.08.11.08 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m |
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02.08.11.09 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m |
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02.08.11.10 Freboldite CoSe P 63/mmc 6/m 2/m 2/m |
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02.08.11.11 Achavalite! FeSe P 63/mmc 6/m 2/m 2/m |
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02.08.11.12 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m |
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02.08.11.13 Vavrinite! Ni2SbTe2 P 63/mmc 6/m 2/m 2/m |
Strunz Class: |
02.CC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CC -With Ni, Fe, Co, PGE, etc. |
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02.CC.05 Achavalite FeSe P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Freboldite CoSe P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Jaipurite* CoS P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Nickeline NiAs P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Zlatogorite! CuNiSb2 P 3m1 3 2/m |
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02.CC.05 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m |
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Other Freboldite Information
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References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
See Also: |
Links to other databases for Freboldite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Freboldite Specimen Label here :
Freboldite
CoSe
Dana No: 02.08.11.10 Strunz No: 02.CC.05
Locality:
Notes:
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