Crocobelonite-2O
A structural variant of Crocobelonite
This page is currently not sponsored. Click here to sponsor this page.
Formula:
CaFe3+2O(PO4)2
Specific Gravity:
3.555 (Calculated)
Crystal System:
Orthorhombic
Unique Identifiers
Mindat ID:
470533
Long-form identifier:
mindat:1:1:470533:4
GUID
(UUID V4):
(UUID V4):
02621a90-72d6-41b1-b58c-0a8e8a0818cc
Physical Properties of Crocobelonite-2O
Tenacity:
Brittle
Cleavage:
Perfect
In two directions
In two directions
Density:
3.555 g/cm3 (Calculated)
Optical Data of Crocobelonite-2O
Type:
Biaxial (+)
RI values:
nα = 1.885(5) nβ = 1.885(5) nγ = 1.950(5)
2V:
Measured: 10°
Max Birefringence:
δ = 0.065
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Pleochroism:
Strong
Comments:
Y β pale-yellow, Z β deep brownish-orange
Chemical Properties of Crocobelonite-2O
Formula:
CaFe3+2O(PO4)2
Elements listed:
Crystallography of Crocobelonite-2O
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 14.2757(1) Å, b = 6.3832(1) Å, c = 7.3169(1) Å
Ratio:
a:b:c = 2.236 : 1 : 1.146
Unit Cell V:
666.75 Γ
Β³ (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.54 Γ | (16) |
| 5.12 Γ | (26) |
| 3.549 Γ | (100) |
| 3.200 Γ | (50) |
| 2.912 Γ | (19) |
| 2.869 Γ | (40) |
| 2.662 Γ | (21) |
| 2.264 Γ | (20) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Crocobelonite-2O
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sergey N. Britvin, Mikhail N. Murashko, Maria G. Krzhizhanovskaya, Natalia S. Vlasenko, Oleg S. Vereshchagin, Yevgeny Vapnik, and Vladimir N. Bocharov (2022) Crocobelonite, CaFe3+2(PO4)2O, a new oxyphosphate mineral, the product of pyrolytic oxidation of natural phosphides. American Mineralogist (in press)
Internet Links for Crocobelonite-2O
mindat.org URL:
https://www.mindat.org/min-470533.html
Please feel free to link to this page.
Please feel free to link to this page.
Mineral Dealers:
