Sobotkite
A variety of Saponite
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About Sobotkite
Formula:
(K,Ca0.5)0.33(Mg0.66Al0.33)3(Si3Al)O10(OH)2 · 1-5H2O
Hardness:
3
Crystal System:
Monoclinic
Name:
Named for the first recorded locality, Sobótka in Poland, from which it was originally described in 1976.
Later found to be an Al-rich variety of saponite.
Later found to be an Al-rich variety of saponite.
Unique Identifiers
Mindat ID:
7300 (as Sobotkite)
3528 (as Saponite)
3528 (as Saponite)
Long-form identifier:
mindat:1:1:7300:0 (as Sobotkite)
mindat:1:1:3528:2 (as Saponite)
mindat:1:1:3528:2 (as Saponite)
GUID
(UUID V4):
(UUID V4):
9d3a8609-d788-40a5-9e6f-67e85f514e9c (as Sobotkite)
d53f1244-e026-419c-a796-320c601e4983 (as Saponite)
d53f1244-e026-419c-a796-320c601e4983 (as Saponite)
Classification of Sobotkite
Discredited
71.3.1b.1
71 : PHYLLOSILICATES Sheets of Six-Membered Rings
3 : Sheets of 6-membered rings with 2:1 clays
71 : PHYLLOSILICATES Sheets of Six-Membered Rings
3 : Sheets of 6-membered rings with 2:1 clays
Physical Properties of Sobotkite
Hardness:
3 on Mohs scale
Optical Data of Sobotkite
Type:
Biaxial
RI values:
nα = 1.513 nβ = 1.525 nγ = 1.536
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
strong
Chemical Properties of Sobotkite
Formula:
(K,Ca0.5)0.33(Mg0.66Al0.33)3(Si3Al)O10(OH)2 · 1-5H2O
Crystallography of Sobotkite
Crystal System:
Monoclinic
First Recorded Occurrence of Sobotkite
Geological Setting of First Recorded Material:
Laterite on ultrabasic rock.
Other Language Names for Sobotkite
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 Sobotkite
mindat.org URL:
https://www.mindat.org/min-7300.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Sobotkite
Reference List:
Localities for Sobotkite
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.
Chile | |
| |
Italy | |
| |
Poland (FRL) | |
| |
USA | |
|
Cuero Crater, DeWitt County, Texas, USA