Johachidolite Mineral Data

Johachidolite Mineral Data +

General Johachidolite Information

Chemical Formula:

CaAlB3O7

Composition:

Molecular Weight = 211.49 gm

Calcium 18.95 % Ca 26.52 % CaO

Aluminum 12.76 % Al 24.11 % Al₂O₃

Boron 15.33 % B 49.38 % B₂O₃

Oxygen 52.96 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaAl(B₃O₇)

IMA Status:

Valid Species (Pre-IMA) 1942

Locality:

NO Link to MinDat.org Location Data.

Synonym:

ICSD 10245

PDF 29-280

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Johachidolite Crystallography

Axial Ratios:

a:b:c =0.6796:1:0.373

Cell Dimensions:

a = 7.968, b = 11.724, c = 4.374, Z = 4; V = 408.61 Den(Calc)= 3.44

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mma

Physical Properties of Johachidolite

Cleavage:

None

Color:

Colorless, White.

Density:

3.37

Diaphaniety:

Transparent

Hardness:

7.5 - Garnet

Luminescence:

Fluorescent.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Johachidolite

Gladstone-Dale:

CI meas= -0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2088,KPDmeas= 0.2132,KC= 0.2117

Optical Data:

Biaxial (+), a=1.712, b=1.717, g=1.726, bire=0.0140

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Johachidolite

Electron Density:

r_electron=3.31 gm/cc
note: r_{Johachidolite}=3.37 gm/cc.

Fermion Index

Fermion Index = 0.03102
Boson Index = 0.96898

Photoelectric:

PE_{Johachidolite}= 2.89 barns/electron
U=PE_{Johachidolite} x r_electron= 9.59 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Johachidolite is Not Radioactive

Johachidolite Classification

Dana Class:

24.5.3.1 (24)Borates - Anhydrous

(24.5)with miscellaneous formulae

(24.5.3)Dana Group

24.5.3.1 Johachidolite CaAlB3O7 C mma 2/m 2/m 2/m

Strunz Class:

V/L.03-10 V - Nitrates, Carbonates and Borates

V/L - Shelly borates with [BO2]1- to [B6O10]2-

V/L.03 - Johachidolite series

V/L.03-10 Johachidolite CaAlB3O7 C mma 2/m 2/m 2/m

Other Johachidolite 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 Johachidolite :
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 Johachidolite Specimen Label here :

Johachidolite

CaAlB3O7
Dana No: 24.5.3.1 Strunz No: V/L.03-10
Locality:

Notes: