| Chelkarite Mineral Data |
[Newest Minerals] [Rare Minerals] [Past Sale Items] [About Us] [A-Rocks Auctions]
T G Fine Minerals sells Australian Minerals from all the classic and current localities
We are one the most comprehensive sellers of these (Aussie) minerals in the world
Broken Hill specimens are our specialty along with fine worldwide minerals, Australian opals, fossils & gems
- 26.7.2.1 Chelkarite CaMgB2O4Cl2·7(H2O)(?) P bca 2/m 2/m 2/m
- V/J.02-10 Calciborite CaB2O4 Pccn 2/m 2/m 2/m
- V/J.02-20 Chelkarite CaMgB2O4Cl2·7(H2O)(?) P bca 2/m 2/m 2/m
- V/J.02-30 Aldzhanite? CaMgB2O4Cl·7(H2O)(?) Unk Ortho
General Chelkarite Information |
|||
 Chemical Formula: |
CaMgB2O4Cl2·7(H2O) (?) | ||
| Composition: |
Molecular Weight = 347.01 gm | ||
| Calcium 11.55 % Ca 16.16 % CaO | |||
| Magnesium 7.00 % Mg 11.61 % MgO | |||
| Boron 6.23 % B 20.06 % B2O3 | |||
| Hydrogen 4.07 % H 36.34 % H2O | |||
| Chlorine 20.43 % Cl 20.43 % Cl | |||
| - % Cl -4.61 % -O=Cl2 | |||
| Oxygen 50.72 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
CaMgB2O4Cl2·7(H2O) | ||
| IMA Status: |
Approved IMA 1968 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
Chelkarite Image | |||
|
Images:
|
|
||
Chelkarite Crystallography |
|||
| Axial Ratios: |
a:b:c =0.6569:1:0.3963 | ||
| Cell Dimensions: |
a = 13.69, b = 20.84, c = 8.26, Z = 12; V = 2,356.57 Den(Calc)= 2.93 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.531(1), 10.42(0.9), 2.209(0.8), | ||
Physical Properties of Chelkarite |
|||
| Cleavage: |
[???] Perfect | ||
| Color: |
Colorless. | ||
| Diaphaniety: |
Transparent | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Chelkarite |
|||
| Gladstone-Dale: |
CI calc= 0.362 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.184,KC= 0.2884 |
||
| Optical Data: |
Biaxial (?), a=1.52, g=1.558, bire=0.0380 | ||
Calculated Properties of Chelkarite |
|||
| Electron Density: |
relectron=3.01 gm/cc |
||
| Fermion Index |
Fermion Index = 0.0198 Boson Index = 0.9802 |
||
| Photoelectric: |
PEChelkarite = 2.99 barns/electron |
||
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Chelkarite is Not Radioactive |
||
Chelkarite Classification |
|||
| Dana Class: |
26.7.2.1 (26)Hydrated Borates Containing Hydroxyl or Halogen | ||
| (26.7)Dana Type | |||
| (26.7.2)Dana Group | |||
| Strunz Class: |
V/J.02-20 V - Nitrates, Carbonates and Borates | ||
| V/J - Chain borates with [B2O4]2- to [B6O10]2- | |||
| V/J.02 - Calciborite - Aldzhanite(?) series | |||
Other Chelkarite 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 Chelkarite : 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 Search for Chelkarite using: Visit our Advertisers for Chelkarite : Translate Chelkarite Mineral Data : Ask about Chelkarite here : Print or Cut-and-Paste your Chelkarite Specimen Label here :
|
||
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |