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Reinhardbraunsite Mineral Data

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General Reinhardbraunsite Information

Help on Chemical  Formula: Chemical Formula: Ca5(SiO4)2(OH,F)2
Help on Composition: Composition: Molecular Weight = 419.57 gm
   Calcium   47.76 %  Ca   66.83 % CaO
   Silicon   13.39 %  Si   28.64 % SiO2
   Hydrogen   0.36 %  H     3.22 % H2O
   Oxygen    36.23 %  O
   Fluorine   2.26 %  F     2.26 % F
               -   %   F    -0.95 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5(SiO4)2(OH)1.5F0.5
Help on Environment: Environment: In contact metamorphosed and metasomatized calcium-rich xenoliths in scoria.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Ettringer Bellerberg volcano, near Mayen, Eifel district, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Reinhard Brauns (1861-1937), Professor of Mineralogy at the University of Bonn, Bonn, Germany.
Help on Name Pronunciation: Name Pronunciation: Reinhardbraunsite + Pronunciation Say REINHARDBRAUNSITE
Help on Synonym: Synonym: Calciochondrodite
  ICSD 31275
  PDF 37-414

Reinhardbraunsite Image

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  Reinhardbraunsite   Brownmillerite

Comments: Pink crystalline reinhardbraunsite in brownmillerite.
Location: Near Bellerberg, Eifel, Rheinland-Pflaz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Reinhardbraunsite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.268:1:1.7498
Help on Cell Dimensions: Cell Dimensions: a = 11.458, b = 5.052, c = 8.84, Z = 2; beta = 108.91° V = 484.09 Den(Calc)= 2.88
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.902(1), 3.335(0.8), 2.903(0.75),

Physical Properties of Reinhardbraunsite

Help on Cleavage: Cleavage: {110} Distinct
Help on Color: Color: Light pink.
Help on Density: Density: 2.84
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Reinhardbraunsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2133,KPDmeas= 0.2163,KC= 0.2119
Ncalc = 1.6 - 1.61
Help on Optical Data: Optical Data: Biaxial (-), a=1.606, b=1.617, g=1.62, bire=0.0140, 2V(Calc)=54, 2V(Meas)=44-50.

Calculated Properties of Reinhardbraunsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.88 gm/cc
note: Specific Gravity of Reinhardbraunsite =2.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0070713388
Boson Index = 0.9929286612
Help on Photoelectric: Photoelectric: PEReinhardbraunsite = 6.37 barns/electron
U=PEReinhardbraunsite x rElectron Density= 18.36 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Reinhardbraunsite is Not Radioactive

Reinhardbraunsite Classification

Help on  Dana Class: Dana Class: 52.03.02b.03 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.03)with cations in [6] coordination only
  (52.03.02b)Humite group (Chondrodite series)
52.03.02b.01 Alleghanyite Mn5(SiO4)2(OH)2 P 21/a 2/m
52.03.02b.02 Chondrodite (Mg,Fe)5(SiO4)2(F,OH)2 P 21/c 2/m
52.03.02b.03 Reinhardbraunsite Ca5(SiO4)2(OH,F)2 P 21/a 2/m
52.03.02b.04 Ribbeite (Mn,Mg)5(SiO4)2(OH)2 P nma 2/m 2/m 2/m
52.03.02b.05 Kumtyubeite! Ca5(SiO4)2F2 P 21/a 2/m
Help on  Strunz Class: Strunz Class: 09.AF.45 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AF -Nesosilicates with additional anions;
09.AF.45 Alleghanyite Mn5(SiO4)2(OH)2 P 21/a 2/m
09.AF.45 Chondrodite (Mg,Fe)5(SiO4)2(F,OH)2 P 21/c 2/m
09.AF.45 Reinhardbraunsite Ca5(SiO4)2(OH,F)2 P 21/a 2/m
09.AF.45 Kumtyubeite! Ca5(SiO4)2F2 P 21/a 2/m

Other Reinhardbraunsite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Reinhardbraunsite :
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

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Dana No: 52.03.02b.03 Strunz No: 09.AF.45





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