UM1992-33-SiO:AlCaFeHMg
Valid as an unnamed mineral
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Formula:
(Ca,Mg,Na)0.3Mg3(Si,Al,Fe3+)4O10(OH,F)2.2H2O
Colour:
light yellow to reddish brown (depending on individuals orientation)
Lustre:
Pearly
Specific Gravity:
2.43
Similar to UM1979-20-SiO:AlCaFeHKMgMnNaTi.
A heterogenous 2:1 layer silicate, somewhat similar to vermiculite.
Chemically zoned hexagonal-outline flakes, 0.5-2 mm across.
As intergrowths with phlogopite, on fissures walls with asbestiform richterite.
A heterogenous 2:1 layer silicate, somewhat similar to vermiculite.
Chemically zoned hexagonal-outline flakes, 0.5-2 mm across.
As intergrowths with phlogopite, on fissures walls with asbestiform richterite.
Unique Identifiers
Mindat ID:
53122
Long-form identifier:
mindat:1:1:53122:3
Similar Names
| UM1955-02-SiO:AlCaFeHMg | (Ca,Fe2+)(Fe3+,Mg,Al)2[Si2Al2]O10(OH)2 | |
| UM1984-35-SiO:AlCaFeKMg | ~(K,Na)2Ca2Mg2(Fe,Mg)3(Si,Al)12O30 | |
| UM2002-39-SiO:AlCaFeHMg | Mg3(Si2O5)(OH)4 - Ca0.25(Mg,Fe)3[(Si,Al)4O10](OH)2 · nH2O | |
| UM2005-28-SiO:AlCaFeHMn | ~Ca(Mn,Fe)Si2O6 · 2H2O |
IMA Classification of UM1992-33-SiO:AlCaFeHMg
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM1992-33-SiO:AlCaFeHMg
Pearly
Transparency:
Transparent, Opaque
Colour:
Light yellow to reddish brown (depending on individuals orientation)
Comment:
Locally opalescent
Comment:
Mica-like
Cleavage:
Perfect
{001}
{001}
Density:
2.43 g/cm3 (Measured)
Chemistry of UM1992-33-SiO:AlCaFeHMg
Mindat Formula:
(Ca,Mg,Na)0.3Mg3(Si,Al,Fe3+)4O10(OH,F)2.2H2O
Element Weights:
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 12.3 Å | (100) |
| 4.55 Å | (50) |
| 2.64 Å | (60) |
| 2.459 Å | (40) |
| 1.544 Å | (80) |
Locality:
Comments:
another grain: 14.4(100), 4.58(50), 2.64(50), 2.449(30), and l. 549(80)
Other Information
IR Spectrum:
spectrum somewhat similar to some mixed-layer silicates
Notes:
insoluble in HCl; does't exfoliate when heated; does not react to ethylene glycol or glycerin treatment
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 UM1992-33-SiO:AlCaFeHMg
mindat.org URL:
https://www.mindat.org/min-53122.html
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References for UM1992-33-SiO:AlCaFeHMg
Reference List:
Localities for UM1992-33-SiO:AlCaFeHMg
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 | |
| Lazebnik et al. (1992) +1 other reference |
