Sibirskite Mineral Data

Sibirskite Mineral Data +

General Sibirskite Information

Chemical Formula:

CaHBO3

Composition:

Molecular Weight = 99.89 gm

Calcium 40.12 % Ca 56.14 % CaO

Boron 10.82 % B 34.85 % B₂O₃

Hydrogen 1.01 % H 9.02 % H₂O

Oxygen 48.05 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaH(BO₃)

IMA Status:

Approved IMA 1962

Locality:

Yuliya Svintsoviya deposit, Khakassy (Khakassiya) District, Siberia, Russia Link to MinDat.org Location Data.

Name Origin:

Named for Siberia (sibirski).

Sibirskite Image

Images:

Sibirskite

Comments: Translucent granular sibirskite.
Location: Novofrolovskoye, Sverdlovsk District, Northern Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sibirskite Crystallography

Axial Ratios:

a:b:c =0.7505:1:3.9468

Cell Dimensions:

a = 3.67, b = 4.89, c = 19.3, Z = 5; beta = 62° V = 305.82 Den(Calc)= 2.71

Crystal System:

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

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

By Intensity(I/I_o): 2.58(1), 2.93(1), 1.878(0.6),

Physical Properties of Sibirskite

Color:

Colorless, Dark gray.

Diaphaniety:

Transparent

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Sibirskite

Gladstone-Dale:

CI calc= -0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2283,KC= 0.2235

Optical Data:

Biaxial (-), a=1.555, b=1.643, g=1.658, bire=0.1030, 2V(Calc)=42, 2V(Meas)=43.

Calculated Properties of Sibirskite

Electron Density:

r_electron=2.71 gm/cc
note: r_Sibirskite=2.71 gm/cc.

Fermion Index

Fermion Index = 0.0223
Boson Index = 0.9777

Photoelectric:

PE_Sibirskite= 5.05 barns/electron
U=PE_Sibirskite x r_electron= 13.70 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sibirskite is Not Radioactive

Sibirskite Classification

Dana Class:

25.2.2.1 (25)Anhydrous Borates Containing Hydroxyl or Halogen

(25.2)Dana Type

(25.2.2)Dana Group

25.2.2.1 Sibirskite CaHBO3 P 2/m 2/m

Strunz Class:

V/H.02-30 V - Nitrates, Carbonates and Borates

V/H - Group borates. Planary groups [B2O5]4- to [B2O7]2-

V/H.02 - Szaibelyite - Sibirskite series

V/H.02-10 Szaibelyite MgBO2(OH) P 2₁/a 2/m

V/H.02-20 Sussexite MnBO2(OH) P 2₁/c 2/m

V/H.02-30 Sibirskite CaHBO3 P 2/m 2/m

V/H.02-35 Parasibirskite! Ca2B2O5·(H2O) P 2₁/m 2/m

Other Sibirskite Information

References:

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

See Also:

Links to other databases for Sibirskite :
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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Print or Cut-and-Paste your Sibirskite Specimen Label here :

Sibirskite

CaHBO3
Dana No: 25.2.2.1 Strunz No: V/H.02-30
Locality:

Notes: