Mineralogy Database

Rambergite Mineral Data

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General Rambergite Information

Help on Chemical  Formula: Chemical Formula: MnS
Help on Composition: Composition: Molecular Weight = 87.00 gm
   Manganese  63.14 %  Mn
   Sulfur     36.86 %  S
             100.00 % 
Help on Empirical Formula: Empirical Formula: Mn2+S
Help on Environment: Environment: Found in anoxic laminated sediments rich in organic matter. Dimorphic relationship with alabandite.
Help on IMA Status: IMA Status: Approved IMA 1995 (Dana # Added)
Help on Locality: 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.
Help on Name Origin: 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.
Help on Name Pronunciation: Name Pronunciation: Rambergite + Pronunciation Say RAMBERGITE
Help on Synonym: Synonym: IMA1995-028

Rambergite Image

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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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Comments: Dark reddish-brown rambergite mass in matrix.
Location: Ronneberg, Thuringen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rambergite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.61836
Help on Cell Dimensions: Cell Dimensions: a = 3.975, c = 6.433, Z = 2; V = 88.03 Den(Calc)= 3.28
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc
Help on X Ray Diffraction: 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),

Physical Properties of Rambergite

Help on Cleavage: Cleavage: {001} Distinct, {110} Distinct
Help on Color: Color: Brown, Black.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Hexagonal - Six-sided crystal shape in cross-section or habit.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Resinous
Help on Streak: Streak: brown

Optical Properties of Rambergite

Help on Optical Data: Optical Data: Uniaxial (+/-), a=2.62-2.77, b=2.62-2.77, bire=0.0000.
Help on RL Color: RL Color: Steel gray with brown-red internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Rambergite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   24.50   22.10 
 546 nm   22.60   20.50 
 589 nm   22.10   20.00 
 650 nm   21.60   19.60 
Calculated Relative Intensity Colors of Rambergite in Air
   0%   50% 100% 150% 200% 250% 300% 350% 400% 440%

Calculated Properties of Rambergite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.09 gm/cc
note: Specific Gravity of Rambergite =3.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0027641817
Boson Index = 0.9972358183
Help on Photoelectric: Photoelectric: PERambergite = 18.54 barns/electron
U=PERambergite x rElectron Density= 57.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rambergite is Not Radioactive

Rambergite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.08)where Am Bn Xp, with (m+n):p=1:1
  (02.08.07)Wurtzite Group (Hexagonal: P63mc) Wurtzite (Zn,Fe)S P 63mc 6mm Greenockite CdS P 63mc 6mm Cadmoselite CdSe P 63mc 6mm Rambergite! MnS P 63mc 6mm
Help on  Strunz Class: Strunz Class: 02.CB.45 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.C - Metal Sulfides, M:S = 1:1 (and similar)
  02.CB -With Zn, Fe, Cu, Ag, Au, etc
02.CB.45 Cadmoselite CdSe P 63mc 6mm
02.CB.45 Greenockite CdS P 63mc 6mm
02.CB.45 Rambergite! MnS P 63mc 6mm
02.CB.45 Wurtzite (Zn,Fe)S P 63mc 6mm

Other Rambergite Information

Help on References: References: NAME( CanMin, 8/99) PHYS. PROP.(MinRec, Vol 33, p 168) OPTIC PROP.(Am.Min.,Vol.83,p1117,1998)
Help on See Also: 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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Dana No: Strunz No: 02.CB.45





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