Mineralogy Database

Johachidolite Mineral Data

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General Johachidolite Information

Help on Chemical  Formula: Chemical Formula: CaAlB3O7
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: CaAl(B3O7)
Help on Environment: Environment: Nepheline dike cutting limestone.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1942
Help on Locality: Locality: Johachido district, Kankyo Hodu Prefecture, North Korea. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Johachidolite + Pronunciation Say JOHACHIDOLITE
Help on Synonym: Synonym: ICSD 10245
  PDF 29-280

Johachidolite Image

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Comments: 0.91 carat round cut johachidolite gem.
Location: Byant Gyi, Pein Pyit, Mogok, Burma (Myanmar). Scale: Not Given.
© Adam Larson

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Comments: Yellowish orange crystal of johachidolite on matix (quartz, muscovite).
Location: Pein Pyit, Mogok, Mandalay Myanmar. Scale: Crystal Size: 1.2 × 0.7 cm.
© Fabre Minerals

Johachidolite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6796:1:0.373
Help on Cell Dimensions: Cell Dimensions: a = 7.968, b = 11.724, c = 4.374, Z = 4; V = 408.61 Den(Calc)= 3.44
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mma

Physical Properties of Johachidolite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White.
Help on Density: Density: 3.37
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 7.5 - Garnet
Help on Luminescence: Luminescence: Fluorescent, Short UV=blue.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Johachidolite

Help on Gladstone-Dale: 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
Ncalc = 1.71 - 1.73
Help on Optical Data: Optical Data: Biaxial (+), a=1.712, b=1.717, g=1.726, bire=0.0140
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.

Calculated Properties of Johachidolite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.31 gm/cc
note: Specific Gravity of Johachidolite =3.37 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEJohachidolite = 2.89 barns/electron
U=PEJohachidolite x rElectron Density= 9.59 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Johachidolite is Not Radioactive

Johachidolite Classification

Help on  Dana Class: Dana Class: (24)Borates - Anhydrous
  (24.05)with miscellaneous formulae
  (24.05.03)Dana Group Johachidolite CaAlB3O7 C mma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 06.CC.05 06 - BORATES
  06.C - Triborates
  06.CC -Phyllo-triborates
06.CC.05 Johachidolite CaAlB3O7 C mma 2/m 2/m 2/m

Other Johachidolite 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 Johachidolite :
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

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Dana No: Strunz No: 06.CC.05





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