UM1995-42-SiO:BaCaFeKMnNaSrTi
Valid as an unnamed mineral
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Formula:
(K,Ba,Sr)2Na(Na,Fe,Mn,Ca)2Ti3Si4O18
Colour:
light brown
Specific Gravity:
3.61 (Calculated)
Crystal System:
Monoclinic
Isostructural with:
The K analogue of barytolamprophyllite.
Lamellae-forming crystals, 0.1-0.5 mm in diameter, from a syenitic pegmatite.
Empirical formula based on electron microprobe data: (K0.98Ba0.84Sr0.21)Σ2.03[Na(Na1.2Fe0.41Mn0.42Ca0.27)Σ2.3(TiO2)1.26][(Si2O7)2Ti2O2].
Lamellae-forming crystals, 0.1-0.5 mm in diameter, from a syenitic pegmatite.
Empirical formula based on electron microprobe data: (K0.98Ba0.84Sr0.21)Σ2.03[Na(Na1.2Fe0.41Mn0.42Ca0.27)Σ2.3(TiO2)1.26][(Si2O7)2Ti2O2].
Unique Identifiers
Mindat ID:
53638
Long-form identifier:
mindat:1:1:53638:9
GUID
(UUID V4):
(UUID V4):
c0f96e3a-808a-47f5-a971-ae908f570726
IMA Classification of UM1995-42-SiO:BaCaFeKMnNaSrTi
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM1995-42-SiO:BaCaFeKMnNaSrTi
Colour:
light brown
Density:
3.61 g/cm3 (Calculated)
Chemistry of UM1995-42-SiO:BaCaFeKMnNaSrTi
Mindat Formula:
(K,Ba,Sr)2Na(Na,Fe,Mn,Ca)2Ti3Si4O18
Crystallography of UM1995-42-SiO:BaCaFeKMnNaSrTi
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 20.086(8) Å, b = 7.099(3) Å, c = 5.411(1) Å
β = 96.65(3)°
β = 96.65(3)°
Ratio:
a:b:c = 2.829 : 1 : 0.762
Unit Cell V:
766.37 ų (Calculated from Unit Cell)
Z:
2
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 UM1995-42-SiO:BaCaFeKMnNaSrTi
mindat.org URL:
https://www.mindat.org/min-53638.html
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References for UM1995-42-SiO:BaCaFeKMnNaSrTi
Reference List:
Localities for UM1995-42-SiO:BaCaFeKMnNaSrTi
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).
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.
All localities listed without proper references should be considered as questionable.
Russia | |
| Rastsvetaeva et al. (1995) +1 other reference |