Cayalsite-(Y)-1O
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About Cayalsite-(Y)-1O
Formula:
CaY6Al2Si4O18F6
Crystal System:
Orthorhombic
Unique Identifiers
Mindat ID:
46663
Long-form identifier:
mindat:1:1:46663:7
Optical Data of Cayalsite-(Y)-1O
Type:
Biaxial (+)
RI values:
nα = 1.730(5) nβ = 1.740(5) nγ = 1.760(5)
2V:
Measured: 56.5°
Max. Birefringence:
δ = 0.030
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 Cayalsite-(Y)-1O
Mindat Formula:
CaY6Al2Si4O18F6
Element Weights:
Crystallography of Cayalsite-(Y)-1O
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pban
Setting:
Pban
Cell Parameters:
a = 15.993(1) Å, b = 5.5306(3) Å, c = 9.6590(7) Å
Ratio:
a:b:c = 2.892 : 1 : 1.746
Unit Cell V:
854.35 ų (Calculated from Unit Cell)
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Cayalsite-(Y)-1O associated with Yttrofluorite | (Ca1-xYx)F2+x where 0.05 < x < 0.3 |
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 Cayalsite-(Y)-1O
mindat.org URL:
https://www.mindat.org/min-46663.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Cayalsite-(Y)-1O
Localities for Cayalsite-(Y)-1O
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.
Norway | |
| Malcherek et al. (2015) |
| Malcherek et al. (2015) |
Øvre Lapplægeret Quarry, Lapplægeret, Drag, Hamarøy, Nordland, Norway