Uralborite Mineral Data

Uralborite Mineral Data
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General Uralborite Information

Help on Chemical Formula: Chemical Formula: CaB2O2(OH)4
Help on Composition: Composition: Molecular Weight = 161.73 gm
   Calcium   24.78 %  Ca   34.67 % CaO
   Boron     13.37 %  B    43.05 % B2O3
   Hydrogen   2.49 %  H    22.28 % H2O
   Oxygen    59.36 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaB2O2(OH)4
Help on Environment: Environment: Secondary mineral in boron-rich iron-ore skarns
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: Novofrolovskoye copper deposit, near Krasnoturinsk, Turinsk district, Northern Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the original locality in the URAL Mountains, Russia, and BORate in its composition.
Help on Name Pronunciation: Name Pronunciation: Uralborite + Pronunciation Say URALBORITE
Help on Synonym: Synonym: ICSD 200158
  PDF 14-272
 

Uralborite Image

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Uralborite

Comments: Micro crystals of Uralborite in a capsule.
Location: Fuka mine, Bitchu-cho, Okayama Prefecture, Japan. Scale: Crystal Size 2 mm.
© Tom Loomis / Dakota Matrix

Uralborite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5592:1:0.7956
Help on Cell Dimensions: Cell Dimensions: a = 6.881, b = 12.305, c = 9.791, Z = 8; beta = 97.46° V = 821.99 Den(Calc)= 2.61
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.13(1), 7.61(1), 2.97(0.9),
Click Here for Large Uralborite Structure Window Crystal Structure:

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Simonov M A , Egorov-Tismenko Y K , Belov N V , Doklady Akademii Nauk SSSR , 234 (1977) p.822-825, Accurate crystal structure of uralborite, Ca2[B4O4(OH)8]

 

Physical Properties of Uralborite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Colorless.
Help on Density: Density: 2.6
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Fluorescent, Long UV=violet.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Uralborite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.028 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2335,KPDmeas= 0.2344,KC= 0.2411
Ncalc = 1.63
Help on Optical Data: Optical Data: Biaxial (+), a=1.604, b=1.609, g=1.615, bire=0.0110
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Uralborite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.64 gm/cc
note: Specific Gravity of Uralborite =2.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEUralborite = 3.21 barns/electron
U=PEUralborite x rElectron Density= 8.48 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Uralborite is Not Radioactive
 

Uralborite Classification
Help on Dana Class: Dana Class: 25.03.04.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.03)Dana Type
  (25.03.04)Dana Group
 
25.03.04.01 Uralborite CaB2O2(OH)4 P 21/n 2/m
Help on Strunz Class: Strunz Class: 06.DA.35 06 - BORATES
  06.D - Tetraborates
  06.DA -Neso-tetraborates
 
06.DA.35 Uralborite CaB2O2(OH)4 P 21/n 2/m
 

Other Uralborite Information
Help on References: References: NAME( AntBidBlaNic5) 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 Uralborite :
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
15 - WWW-MINCRYST

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Ask about Uralborite here :
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Rockhounds Discussion Group on Yahoo Groups
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Print or Cut-and-Paste your Uralborite Specimen Label here :

Uralborite

CaB2O2(OH)4
Dana No: 25.03.04.01 Strunz No: 06.DA.35
Locality:

 

Notes: