Uralolite Mineral Data

Uralolite Mineral Data +

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General Uralolite Information

Chemical Formula:

Ca2Be4(PO4)3(OH)3·5(H2O)

Composition:

Molecular Weight = 542.22 gm

Calcium 14.78 % Ca 20.68 % CaO

Beryllium 6.65 % Be 18.45 % BeO

Phosphorus 17.14 % P 39.27 % P₂O₅

Hydrogen 2.42 % H 21.60 % H₂O

Oxygen 59.01 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₂Be₄(PO₄)₃(OH)₃·5(H₂O)

Environment:

Alteration of beryllonite.

IMA Status:

Approved IMA 1964

Locality:

Boyevka, central Ural Mountains, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 78418

PDF 16-718

Uralolite Image

Images:

Uralolite

Comments: Radiating aggregates of uralolite.
Location: Brandr?cken, Weinebene pass, Koralpe Mts, Carinthia, Austria. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Uralolite Crystallography

Axial Ratios:

a:b:c =0.4092:1:0.9977

Cell Dimensions:

a = 6.55, b = 16.005, c = 15.969, Z = 4; beta = 101.64° V = 1,639.65 Den(Calc)= 2.20

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

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

By Intensity(I/I_o): 3.56(1), 3.04(0.8), 3.2(0.7),

Crystal Structure:

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Mereiter K , Niedermayr G , Walter F , European Journal of Mineralogy , 6 (1994) p.887-896, Uralolite, Ca2Be4(PO4)3(OH)3*5H2O: new data and crystal structure

Physical Properties of Uralolite

Cleavage:

[100] Poor, [010] Poor

Color:

Colorless, White, Brownish white.

Density:

2.05 - 2.14, Average = 2.09

Diaphaniety:

Transparent to Translucent

Habit:

Concretionary - Rounded massive fine-grained materials.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Habit:

Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat.

Hardness:

2.5 - Finger Nail

Luminescence:

Fluorescent.

Luster:

Subadamantine

Streak:

white

Optical Properties of Uralolite

Gladstone-Dale:

CI meas= -0.073 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.238,KPDmeas= 0.25,KC= 0.233

Optical Data:

Biaxial (-), a=1.51-1.512, b=1.525-1.526, g=1.533-1.536, bire=0.0230-0.0240

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Uralolite

Electron Density:

r_electron=2.22 gm/cc
note: r_Uralolite=2.20 gm/cc.

Fermion Index

Fermion Index = 0.06697
Boson Index = 0.93303

Photoelectric:

PE_Uralolite= 2.73 barns/electron
U=PE_Uralolite x r_electron= 6.07 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Uralolite is Not Radioactive

Uralolite Classification

Dana Class:

42.7.6.1 (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.01-40 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 Uralolite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Uralolite :
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 - WWW-MINCRYST 13 -École des Mines de Paris

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Uralolite

Ca2Be4(PO4)3(OH)3·5(H2O)
Dana No: 42.7.6.1 Strunz No: VII/D.01-40
Locality:

Notes: