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Roscherite Mineral Data

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General Roscherite Information

Help on Chemical  Formula: Chemical Formula: Ca(Mn++,Fe++)5Be4(PO4)6(OH)4•6(H2O)
Help on Composition: Composition: Molecular Weight = 1,097.90 gm
   Calcium      3.65 %  Ca    5.11 % CaO
   Manganese   18.76 %  Mn   24.23 % MnO
   Beryllium    3.28 %  Be    9.11 % BeO
   Iron         6.36 %  Fe    8.18 % FeO
   Phosphorus  16.93 %  P    38.79 % P2O5
   Hydrogen     1.47 %  H    13.13 % H2O
   Oxygen      49.55 %  O
              ______        ______ 
              100.00 %       98.54 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMn2+3.75Fe2+1.25Be4(PO4)6(OH)4•6(H2O)
Help on Environment: Environment: Cavities in granite. Two polymorphs recorded, A (triclinic) and M (monoclinic).
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1914
Help on Locality: Locality: Greifenstein, near Ehrenfridersdorf, Saxony, Germay. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Walter Roscher, mineral collector of Ehrenfriedsdorf, Germany.
Help on Name Pronunciation: Name Pronunciation: Roscherite + Pronunciation Say ROSCHERITE

Roscherite Image

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  Hurlbutite   Roscherite

Comments: White, round crystal clusters of hurlbutite on reddish brown roscherite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Parafransoletite   Roscherite

Comments: White, crystalline aggregate sprays of parafransoletite on dark reddish brown roscherite with massive, white, sucrosic whitlockite.
Location: Tip Top mine, Custer County, South Dakota, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

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  Roscherite   Englishite

Comments: Black crystalline aggregate of roscherite on white englishite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Viitaniemiite   Roscherite

Comments: Colorless to pink viitaniemiite with brownish roscherite.
Location: Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

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  Ushkovite   Roscherite

Comments: Translucent ushkovite microcrystals with orange roscherite on feldspar.
Location: Galileia, Minas Gerais, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Roscherite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.3306:1:0.5633
Help on Cell Dimensions: Cell Dimensions: a = 15.921, b = 11.965, c = 6.741, Z = 2; alpha = 91.067°, beta = 94.35°, gamma = 89.942° V = 1,280.20 Den(Calc)= 2.85
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: C1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.96(1), 9.58(0.9), 3.18(0.7),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 0) ( 1 0 1) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Roscherite

Help on Cleavage: Cleavage: {001} Good, {010} Distinct
Help on Color: Color: Light brown, Dark brown, Olive green, Orange red, Red.
Help on Density: Density: 2.934
Help on Habit: Habit: Pistolitic - > 3mm rounded spherical grains.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Streak: Streak: light brown

Optical Properties of Roscherite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.055 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2229,KPDmeas= 0.2165,KC= 0.2113
Ncalc = 1.6 - 1.62
Help on Optical Data: Optical Data: Biaxial (-), a=1.624, b=1.639, g=1.643, bire=0.0190

Calculated Properties of Roscherite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.89 gm/cc
note: Specific Gravity of Roscherite =2.93 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PERoscherite = 7.93 barns/electron
U=PERoscherite x rElectron Density= 22.90 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Roscherite is Not Radioactive

Roscherite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.07)Roscherite group Roscherite Ca(Mn,Fe)5Be4(PO4)6(OH)4•6(H2O) C1 1 Zanazziite Ca2(Mg,Fe)(Mg,Fe,Al,Mn,Fe)4Be4(PO4)6(OH)4•6(H2O) C 2/c 2/m Greifensteinite! Ca2Be4(Fe,Mn)5(PO4)6(OH)4•6(H2O) C 2/c 2/m Atencioite! Ca2Fe[]Mg2Fe2Be4(PO4)6(OH)4•6H2O P1 1 Guimaraesite Ca2(Zn,Mg,Fe)5Be4(PO4)6(OH)4•6H2O C 2/c 2/m Footemineite! Ca2MnMn2Mn2Be4(PO4)6(OH)4•6H2O P1 1 Ruifrancoite! Ca2([],Mn)2(Fe,Mn,Mg)4Be4(PO4)6(OH)4•6H2O C 2/c 2/m
Help on  Strunz Class: Strunz Class: 08.DA.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DA -With small (and occasionally larger) cations
08.DA.10 Roscherite Ca(Mn,Fe)5Be4(PO4)6(OH)4•6(H2O) C1 1
08.DA.10 Zanazziite Ca2(Mg,Fe)(Mg,Fe,Al,Mn,Fe)4Be4(PO4)6(OH)4•6(H2O) C 2/c 2/m
08.DA.10 Footemineite! Ca2MnMn2Mn2Be4(PO4)6(OH)4•6H2O P1 1
08.DA.10 Atencioite! Ca2Fe[]Mg2Fe2Be4(PO4)6(OH)4•6H2O P1 1
08.DA.10 Greifensteinite! Ca2Be4(Fe,Mn)5(PO4)6(OH)4•6(H2O) C 2/c 2/m
08.DA.10 Ruifrancoite! Ca2([],Mn)2(Fe,Mn,Mg)4Be4(PO4)6(OH)4•6H2O C 2/c 2/m
08.DA.10 Guimaraesite Ca2(Zn,Mg,Fe)5Be4(PO4)6(OH)4•6H2O C 2/c 2/m

Other Roscherite Information

Help on References: References: NAME( Dana8) 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 Roscherite :
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: 08.DA.10





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