Jeremejevite Mineral Data

Jeremejevite Mineral Data
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General Jeremejevite Information

Help on Chemical Formula: Chemical Formula: Al6B5O15(F,OH)3
Help on Composition: Composition: Molecular Weight = 511.93 gm
   Aluminum  31.62 %  Al   59.75 % Al2O3
   Boron     10.56 %  B    34.00 % B2O3
   Hydrogen   0.10 %  H     0.88 % H2O
   Oxygen    48.44 %  O
   Fluorine   9.28 %  F     9.28 % F
               -   %   F    -3.91 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al6B5O15F2.5(OH)0.5
Help on Environment: Environment: Granitic pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1883
Help on Locality: Locality: Soktujberg, Adun-Tchilon and Baikal, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Russian mineralogist, P. V. Jeremejev (1820-1899).
Help on Name Pronunciation: Name Pronunciation: Jeremejevite + Pronunciation Say JEREMEJEVITE
Help on Synonym: Synonym: Eichwaldite
  Eremeyevite
  Eremyeevite
 

Jeremejevite Image

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Jeremejevite

Comments: Partial crystal fragment of jeremejevite.
Location: Mile 72, Swakopmund, Namibia. Scale: Crystal size 0.5 cm.
© John Veevaert
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Jeremejevite

Comments: Two-toned hexagonal crystal of jeremejevite with blue bases and white terminations.
Location: Erongo Mountains, Namibia. Scale: Crystal size 2 cm.
© John Veevaert

Jeremejevite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.95587
Help on Cell Dimensions: Cell Dimensions: a = 8.5591, c = 8.1814, Z = 2; V = 519.06 Den(Calc)= 3.28
Help on Crystal System: Crystal System: Hexagonal - DipyramidalH-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.388(1), 4.27(1), 2.19(0.9),
Help on Forms: Forms:

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Forms: ( 1 1 1) ( 0 1 0) ( 0 0 1)

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Rodellas C , Garcia-Blanco S , Vegas A , Zeitschrift fur Kristallographie , 165 (1983) p.255-260, Crystal structure refinement of jeremejevite (Al6B5F3O15), Locality: Cape Cross, Namibia

 

Physical Properties of Jeremejevite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White, Yellowish white, Bluish white.
Help on Density: Density: 3.28 - 3.31, Average = 3.29
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 7 - Quartz
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Jeremejevite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.039 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.034 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1971,KPDmeas= 0.1962,KC= 0.2041
Ncalc = 1.67 - 1.68
Help on Optical Data: Optical Data: Uniaxial (-), e=1.64, w=1.653, bire=0.0130.
 

Calculated Properties of Jeremejevite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.20 gm/cc
note: Specific Gravity of Jeremejevite =3.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEJeremejevite = 1.09 barns/electron
U=PEJeremejevite x rElectron Density= 3.49 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jeremejevite is Not Radioactive
 

Jeremejevite Classification
Help on Dana Class: Dana Class: 25.08.01.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.08)Dana Type
  (25.08.01)Dana Group
 
25.08.01.01 Jeremejevite Al6B5O15(F,OH)3 P 63/m 6/m
Help on Strunz Class: Strunz Class: 06.AB.15 06 - BORATES
  06.A - Monoborates
  06.AB -BO3, with additional anions; 1(D) + OH, etc.
 
06.AB.15 Jeremejevite Al6B5O15(F,OH)3 P 63/m 6/m
 

Other Jeremejevite Information
Help on References: References: NAME( Duda&Rejl90) 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 Jeremejevite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - CalTech Mineral Spectroscopy
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - Tradeshop.com - The Rainbow of Gems
17 - WWW-MINCRYST

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Jeremejevite

Al6B5O15(F,OH)3
Dana No: 25.08.01.01 Strunz No: 06.AB.15
Locality:

 

Notes: