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UM1986-62-SiO:CaHNaNbTiZn
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Formula:
~(Na,K,Ca,Zn,Fe)3(Nb,Ti)6Si2O20 · 6H2O
Crystal System:
Triclinic
Chemically resembles nenadkevichite and 'natrokomarovite'. Also compare laurentianite.
Forms lamellar intergrowths with epistolite. It is not clear if the phase for which the unit cell parameters are given is identical to the one described in terms of crystal chemistry; SXRD done for the latter one indicates the structure being identical (or similar) to epistolite's.
Forms lamellar intergrowths with epistolite. It is not clear if the phase for which the unit cell parameters are given is identical to the one described in terms of crystal chemistry; SXRD done for the latter one indicates the structure being identical (or similar) to epistolite's.
Unique Identifiers
Mindat ID:
51521
Long-form identifier:
mindat:1:1:51521:6
Chemistry of UM1986-62-SiO:CaHNaNbTiZn
Mindat Formula:
~(Na,K,Ca,Zn,Fe)3(Nb,Ti)6Si2O20 · 6H2O
Element Weights:
Crystallography of UM1986-62-SiO:CaHNaNbTiZn
Crystal System:
Triclinic
Cell Parameters:
a = 5.42 Å, b = 7.13 Å, c = 13.02 Å
α = 94.04°, β = 96.44°, γ = 89.32°
α = 94.04°, β = 96.44°, γ = 89.32°
Ratio:
a:b:c = 0.76 : 1 : 1.826
Unit Cell V:
498.73 ų (Calculated from Unit Cell)
Comment:
Space group not given
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 UM1986-62-SiO:CaHNaNbTiZn
mindat.org URL:
https://www.mindat.org/min-51521.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for UM1986-62-SiO:CaHNaNbTiZn
Reference List:
Localities for UM1986-62-SiO:CaHNaNbTiZn
Showing 1 localities.
ⓘ - 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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
- 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.
Greenland | |
| Karup-Møller (1986) +1 other reference |
