Weinebeneite Mineral Data

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.

Name Pronunciation:

Weinebeneite + Pronunciation

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 - Domatic H-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),

Physical Properties of Weinebeneite

Cleavage:

None

Color:

Colorless.

Density:

2.15

Diaphaneity:

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
Ncalc = 1.51 - 1.52

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:

Bulk Density (Electron Density)=2.21 gm/cc
note: Specific Gravity of Weinebeneite =2.18 gm/cc.

Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Photoelectric:

PE_Weinebeneite= 2.28 barns/electron
U=PE_Weinebeneite x rElectron Density= 5.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Weinebeneite is Not Radioactive

Weinebeneite Classification

Dana Class:

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

(42.07)where (AB)5 (XO4)3 Zq ï¿½ x(H2O)

(42.07.06)Uralolite Group

42.07.06.01 Uralolite Ca2Be4(PO4)3(OH)3•5(H2O) P 2₁/n 2/m

42.07.06.02 Weinebeneite CaBe3(PO4)2(OH)2•5(H2O) Cc m

Strunz Class:

08.DA.20 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DA -With small (and occasionally larger) cations

08.DA.20 Weinebeneite CaBe3(PO4)2(OH)2•5(H2O) Cc m

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 - 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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Weinebeneite

CaBe3(PO4)2(OH)2•5(H2O)
Dana No: 42.07.06.02 Strunz No: 08.DA.20
Locality:

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