UM1989-33-SiO:BaHMnTi
A material that is NOT an approved mineral species
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Formula:
BaMn2TiOSi2O7(OH)2
Crystal System:
Triclinic
Said to be within the compositional limit of hejtmanite. Also reported as a possible Mn analogue of bafertisite. However, this unnamed phase contains no fluorine, which is essential for the two listed species (note that no details on chemical analysis are given). Differs from hejtmanite in space group and some unit-cell parameters (especially the c parameter).
Coexists with rhodonite, tephroite, spessartine, and quartz. The original description gives only Inyl'chek Range as locality; the sample may have come from the Rhodonite occurrence in Muzeinyi Valley, from which the chemically similar hejtmanite is known.
The structure is based on alternating layers; layers bear similarities to seidozerite, and interlayers - to nacaphite.
Coexists with rhodonite, tephroite, spessartine, and quartz. The original description gives only Inyl'chek Range as locality; the sample may have come from the Rhodonite occurrence in Muzeinyi Valley, from which the chemically similar hejtmanite is known.
The structure is based on alternating layers; layers bear similarities to seidozerite, and interlayers - to nacaphite.
Unique Identifiers
Mindat ID:
51716
Long-form identifier:
mindat:1:1:51716:2
GUID
(UUID V4):
(UUID V4):
fce0aa96-faa3-4507-bba3-435fc878da63
Chemistry of UM1989-33-SiO:BaHMnTi
Mindat Formula:
BaMn2TiOSi2O7(OH)2
Crystallography of UM1989-33-SiO:BaHMnTi
Crystal System:
Triclinic
Cell Parameters:
a = 10.767(4) Å, b = 13.858(9) Å, c = 32.99(6) Å
α = 90.2(1)°, β = 94.6(1)°, γ = 89.96(5)°
α = 90.2(1)°, β = 94.6(1)°, γ = 89.96(5)°
Ratio:
a:b:c = 0.777 : 1 : 2.381
Unit Cell V:
4,906.52 ų (Calculated from Unit Cell)
Z:
24
Comment:
Space group is P1 or P-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 UM1989-33-SiO:BaHMnTi
mindat.org URL:
https://www.mindat.org/min-51716.html
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References for UM1989-33-SiO:BaHMnTi
Reference List:
Localities for UM1989-33-SiO:BaHMnTi
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.
Kyrgyzstan | |
| www.minsocam.org (n.d.) +1 other reference |
