Clino-holmquistite
A mixture of two or more distinct mineral species
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Lustre:
Vitreous
Crystal System:
Monoclinic
Name:
Originally named for its relationship to holmquistite.
A Mixture Of:
Originally reported from Tastyg Spodumene Deposit, Tuva Republic, Eastern-Siberian Region, Russia.
Investigation of the holotype material of clino-holmquistite (Ginzburg, 1965) showed it to be a mixture of two distinct amphibole compositions, tremolite and a new amphibole end-member, then named fluoro-sodic-pedrizite (Oberti et al. 2005; IMA 2004-002). The latter was subsequently renamed fluoro-pedrizite.
Investigation of the holotype material of clino-holmquistite (Ginzburg, 1965) showed it to be a mixture of two distinct amphibole compositions, tremolite and a new amphibole end-member, then named fluoro-sodic-pedrizite (Oberti et al. 2005; IMA 2004-002). The latter was subsequently renamed fluoro-pedrizite.
Unique Identifiers
Mindat ID:
6881
Long-form identifier:
mindat:1:1:6881:5
IMA Classification of Clino-holmquistite
Discredited
Classification of Clino-holmquistite
66.1.1.6
66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
1 : Amphiboles - Mg-Fe-Mn-Li subgroup
66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
1 : Amphiboles - Mg-Fe-Mn-Li subgroup
Physical Properties of Clino-holmquistite
Vitreous
Optical Data of Clino-holmquistite
Type:
Biaxial (-)
RI values:
nα = 1.61 nβ = 1.627 nγ = 1.633
2V:
Measured: 55° to 61°, Calculated: 60°
Max. Birefringence:
δ = 0.023
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
Dispersion:
relatively strong
Crystallography of Clino-holmquistite
Crystal System:
Monoclinic
Cell Parameters:
a = 9.8 Å, b = 17.83 Å, c = 5.3 Å
β = 109.1°
β = 109.1°
Ratio:
a:b:c = 0.55 : 1 : 0.297
Unit Cell V:
875.11 ų (Calculated from Unit Cell)
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 22 : Hydration and low-? subsurface aqueous alteration (see also #23) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Synonyms of Clino-holmquistite
Other Language Names for Clino-holmquistite
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 Clino-holmquistite
mindat.org URL:
https://www.mindat.org/min-6881.html
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Please feel free to link to this page.
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References for Clino-holmquistite
Localities for Clino-holmquistite
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 | |
| AM 63 (1978) +2 other references | |
| Trans.Min.Mus.Acad.Sci.USSR (1965) +2 other references |
Spain | |
| Caballero +3 other references |
