Santite Mineral Data

Santite Mineral Data +

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General Santite Information

Chemical Formula:

KB5O6(OH)4·2(H2O)

Composition:

Molecular Weight = 293.20 gm

Potassium 13.33 % K 16.06 % K₂O

Boron 18.43 % B 59.36 % B₂O₃

Hydrogen 2.75 % H 24.58 % H₂O

Oxygen 65.48 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

KB₅O₆(OH)₄·2(H₂O)

IMA Status:

Approved IMA 1970

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 18211

PDF 25-624

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Santite Crystallography

Axial Ratios:

a:b:c =0.9928:1:0.8121

Cell Dimensions:

a = 11.1, b = 11.18, c = 9.08, Z = 4; V = 1,126.81 Den(Calc)= 1.73

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Aba2

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

By Intensity(I/I_o): 3.36(1), 3.52(0.85), 5.6(0.7),

Physical Properties of Santite

Color:

Colorless.

Density:

1.735

Diaphaniety:

Transparent

Streak:

white

Optical Properties of Santite

Gladstone-Dale:

CI meas= -0.059 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.062 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2576,KPDmeas= 0.2569,KC= 0.2427

Optical Data:

Biaxial (+), a=1.422, b=1.435, g=1.48, bire=0.0580

Calculated Properties of Santite

Electron Density:

r_electron=1.75 gm/cc
note: r_Santite=1.74 gm/cc.

Fermion Index

Fermion Index = 0.03701
Boson Index = 0.96299

Photoelectric:

PE_Santite= 1.59 barns/electron
U=PE_Santite x r_electron= 2.79 barns/cc.

Radioactivity:

GRapi = 194.22 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Santite - barely detectable

Santite Classification

Dana Class:

26.5.2.1 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.5)Dana Type

(26.5.2)Dana Group

26.5.2.1 Santite KB5O6(OH)4·2(H2O) Aba2 mm2

Strunz Class:

V/H.15-20 V - Nitrates, Carbonates and Borates

V/H - Group borates. Planary and tetrahedral groups [B3O5]1- to [B6O10]2-

V/H.15 - Ammonioborite - Sborgite series

V/H.15-10 Ammonioborite (NH4)2B10O16·5(H2O) C 2/c 2/m

V/H.15-20 Santite KB5O6(OH)4·2(H2O) Aba2 mm2

V/H.15-30 Sborgite NaB5O6(OH)4·3(H2O) C 2/c 2/m

Other Santite 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 Santite :
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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Ask about Santite here :
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Print or Cut-and-Paste your Santite Specimen Label here :

Santite

KB5O6(OH)4·2(H2O)
Dana No: 26.5.2.1 Strunz No: V/H.15-20
Locality:

Notes: