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Rambergite Mineral Data
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General Rambergite Information
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 Chemical Formula: |
MnS |
| Composition: |
Molecular Weight = 87.00 gm |
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Manganese 63.14 % Mn |
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Sulfur 36.86 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Mn2+S |
| Environment: |
Found in anoxic laminated sediments rich in organic matter. Dimorphic relationship with alabandite. |
| IMA Status: |
Approved IMA 1995 (Dana # Added) |
| Locality: |
Gotland Deep, Baltic Sea, off the coast of Sweden. Also found in a skarn in the Garpenberg area, Dalarna, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named after Hans Ramberg (1917-1998), Professor of Mineralogy and Petrology at the University of Chicago, then at the University of Uppsala, Sweden. |
| Name Pronunciation: |
Rambergite + Pronunciation  |
| Synonym: |
IMA1995-028 |
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Rambergite Image |
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Images:
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Hauerite Rambergite
Comments: Small black octahedral crystals of hauerite with small brown crystals of rambergite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany.
Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag |
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Images:
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Rambergite Crystallography
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| Axial Ratios: |
a:c = 1:1.61836 |
| Cell Dimensions: |
a = 3.975, c = 6.433, Z = 2; V = 88.03 Den(Calc)= 3.28 |
| Crystal System: |
Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc |
| X Ray Diffraction: |
By Intensity(I/Io): 1.82(1)(103), 3.445(0.89)(100), 1.988(0.82)(110),3.217(0.72)(002), 3.036(0.66)(101), 1.691(0.63)(112), |
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Physical Properties of Rambergite
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| Cleavage: |
{001} Distinct, {110} Distinct |
| Color: |
Brown, Black. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
| Habit: |
Hexagonal - Six-sided crystal shape in cross-section or habit. |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Hardness: |
4 - Fluorite |
| Luster: |
Resinous |
| Streak: |
brown |
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Optical Properties of Rambergite
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| Optical Data: |
Uniaxial (+/-), a=2.62-2.77, b=2.62-2.77, bire=0.0000. |
| RL Color: |
Steel gray with brown-red internal reflections. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Rambergite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
24.50 |
22.10 |
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| 546 nm |
22.60 |
20.50 |
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| 589 nm |
22.10 |
20.00 |
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| 650 nm |
21.60 |
19.60 |
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Calculated Relative Intensity Colors of Rambergite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
440% |
| R1 |
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| R2 |
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Calculated Properties of Rambergite
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| Electron Density: |
Bulk Density (Electron Density)=3.09 gm/cc
note: Specific Gravity of Rambergite =3.28 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0027641817
Boson Index = 0.9972358183 |
| Photoelectric: |
PERambergite = 18.54 barns/electron
U=PERambergite x rElectron Density= 57.32 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rambergite is Not Radioactive |
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Rambergite Classification
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| Dana Class: |
02.08.07.04 (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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(02.08.07)Wurtzite Group (Hexagonal: P63mc) |
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02.08.07.01 Wurtzite (Zn,Fe)S P 63mc 6mm |
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02.08.07.02 Greenockite CdS P 63mc 6mm |
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02.08.07.03 Cadmoselite CdSe P 63mc 6mm |
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02.08.07.04 Rambergite! MnS P 63mc 6mm |
| Strunz Class: |
02.CB.45 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.CB -With Zn, Fe, Cu, Ag, Au, etc |
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02.CB.45 Cadmoselite CdSe P 63mc 6mm |
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02.CB.45 Greenockite CdS P 63mc 6mm |
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02.CB.45 Rambergite! MnS P 63mc 6mm |
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02.CB.45 Wurtzite (Zn,Fe)S P 63mc 6mm |
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Other Rambergite Information
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| References: |
NAME( CanMin, 8/99) PHYS. PROP.(MinRec, Vol 33, p 168) OPTIC PROP.(Am.Min.,Vol.83,p1117,1998) |
| See Also: |
Links to other databases for Rambergite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Print or Cut-and-Paste your Rambergite Specimen Label here :
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Rambergite
MnS
Dana No: 02.08.07.04 Strunz No: 02.CB.45
Locality:
Notes:
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