Weinebeneite Mineral Data

Weinebeneite Mineral Data +

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General Weinebeneite Information

Chemical Formula:

CaBe3(PO4)2(OH)2·5(H2O)

Composition:

Molecular Weight = 363.13 gm

Calcium 11.04 % Ca 15.44 % CaO

Beryllium 7.45 % Be 20.66 % BeO

Phosphorus 17.06 % P 39.09 % P₂O₅

Hydrogen 2.78 % H 24.81 % H₂O

Oxygen 61.68 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaBe₃(PO₄)₂(OH)₂·4(H₂O)

Environment:

Secondary mineral found in small fractures in a spodumene-bearing pegmatite. 3 member beryllophosphaate rings.

IMA Status:

Approved IMA 1990

Locality:

Weinebebe, Koralpe, Carinthia, Austria. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 67675

IMA1990-049

PDF 47-1802

Weinebeneite Image

Images:

Weinebeneite

Comments: Colorless Weinebeneite on brown matrix.
Location: Koralpe Mts, Carinthia, Austria. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Weinebeneite Crystallography

Axial Ratios:

a:b:c =1.2256:1:0.9923

Cell Dimensions:

a = 11.897, b = 9.707, c = 9.633, Z = 4; beta = 95.76° V = 1,106.84 Den(Calc)= 2.18

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Cc

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.513(1), 3.421(0.7), 5.92(0.6),

Crystal Structure:

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Walter F , European Journal of Mineralogy , 4 (1992) p.1275-1283, Weinebeneite, CaBe3(PO4)2(OH)2.4H2O, a new mineral species: mineral data, and crystal structure

Physical Properties of Weinebeneite

Cleavage:

None

Color:

Colorless.

Density:

2.15

Diaphaniety:

Transparent to Translucent

Fracture:

Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).

Habit:

Platy - Sheet forms (e.g. micas).

Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Hardness:

3-4 - Calcite-Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Weinebeneite

Gladstone-Dale:

CI meas= -0.023 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2401,KPDmeas= 0.2434,KC= 0.2379

Optical Data:

Biaxial (+), a=1.52, b=1.52, g=1.53, bire=0.0100, 2V(Calc)=0, 2V(Meas)=5-8.

Calculated Properties of Weinebeneite

Electron Density:

r_electron=2.21 gm/cc
note: r_Weinebeneite=2.18 gm/cc.

Fermion Index

Fermion Index = 0.0749
Boson Index = 0.9251

Photoelectric:

PE_Weinebeneite= 2.28 barns/electron
U=PE_Weinebeneite x r_electron= 5.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Weinebeneite is Not Radioactive

Weinebeneite Classification

Dana Class:

42.7.6.2 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.7)where (AB)5 (XO4)3 Zq · x(H2O)

(42.7.6)Dana Group

42.7.6.1 Uralolite Ca2Be4(PO4)3(OH)3·5(H2O) P 2₁/n 2/m

42.7.6.2 Weinebeneite CaBe3(PO4)2(OH)2·5(H2O) Cc m

Strunz Class:

VII/D.01-35 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, mostly cations of small size: Be, Li

VII/D.01 - Moraesite - Uralolite - Roscherite series

VII/D.01-10 Moraesite Be2(PO4)(OH)·4(H2O) Cc,C 2/c Mono

VII/D.01-20 Bearsite Be2(AsO4)(OH)·4(H2O) Cc or C 2/c Mono

VII/D.01-30 Glucine CaBe4(PO4)2(OH)4·0.5(H2O) ? Mono

VII/D.01-35 Weinebeneite CaBe3(PO4)2(OH)2·5(H2O) Cc m

VII/D.01-40 Uralolite Ca2Be4(PO4)3(OH)3·5(H2O) P 2₁/n 2/m

VII/D.01-50 Zanazziite Ca2(Mg,Fe)(Mg,Fe,Al,Mn,Fe)4Be4(PO4)6(OH)4·6(H2O) C 2/c 2/m

VII/D.01-55 Greifensteinite! Ca2Be4(Fe,Mn)5(PO4)6(OH)4·6(H2O) C 2/c 2/m

VII/D.01-60 Roscherite Ca(Mn,Fe)5Be4(PO4)6(OH)4·6(H2O) C1 1

Other Weinebeneite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.78,p847,1993) OPTIC PROP.(Am.Min.,Vol.78,p847,1993)

See Also:

Links to other databases for Weinebeneite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Weinebeneite

CaBe3(PO4)2(OH)2·5(H2O)
Dana No: 42.7.6.2 Strunz No: VII/D.01-35
Locality:

Notes: