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UM1993-06-F:CaNaREEY
Valid as an unnamed mineral
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Formula:
(Na,Ca)3(Y,REE)3F12
Colour:
colourless to pale rose
Lustre:
Vitreous
Specific Gravity:
4.45
Crystal System:
Hexagonal
Chemically resembles gagarinite-(Y). Indeed, inferred to be isostructural with this species and related to it as described by a substitution: NaCa(Y,REE)F6-Na1.5(Y,REE)1.5F6.
As grains, up to 0.5 mm in diameter, intergrown with quartz. In metasomatic formations, with riebeckite, astrophyllite, zircon, a pyrochlore group species, albite, and microcline.
As grains, up to 0.5 mm in diameter, intergrown with quartz. In metasomatic formations, with riebeckite, astrophyllite, zircon, a pyrochlore group species, albite, and microcline.
Unique Identifiers
Mindat ID:
53466
Long-form identifier:
mindat:1:1:53466:4
IMA Classification of UM1993-06-F:CaNaREEY
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM1993-06-F:CaNaREEY
Vitreous
Colour:
Colourless to pale rose
Tenacity:
Brittle
Density:
4.45 g/cm3 (Measured) 4.52 g/cm3 (Calculated)
Comment:
methods not stated
Optical Data of UM1993-06-F:CaNaREEY
Type:
Uniaxial (+)
RI values:
nω = 1.475 nε = 1.495
Max. Birefringence:
δ = 0.020
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Chemistry of UM1993-06-F:CaNaREEY
Mindat Formula:
(Na,Ca)3(Y,REE)3F12
Element Weights:
Elements listed:
Crystallography of UM1993-06-F:CaNaREEY
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 5.9855(5) Å, c = 3.5469(4) Å
Ratio:
a:c = 1 : 0.593
Unit Cell V:
110.05 ų (Calculated from Unit Cell)
Z:
1
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.
Internet Links for UM1993-06-F:CaNaREEY
mindat.org URL:
https://www.mindat.org/min-53466.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for UM1993-06-F:CaNaREEY
Reference List:
Localities for UM1993-06-F:CaNaREEY
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Russia | |
| Kabalov et al. (1993) +1 other reference |
