Skolite
A variety of Glauconite
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Formula:
H4K(Mg,Fe2+,Ca)(Al,Fe3+)3Si6O20 · 4H2O
Colour:
Dark green, grey green, yellowish green
Lustre:
Greasy, Earthy
Hardness:
2
Specific Gravity:
2.508 - 2.572
Name:
Named for original locality - Skole, East Carpathians, Poland (Now Skole, Lviv Oblast, Ukraine)
First Recorded Locality:
A variety of Glauconite
A hydromica close to bravaisite, a variety of glauconite high in Al and Ca and low in Fe3+.
A hydromica close to bravaisite, a variety of glauconite high in Al and Ca and low in Fe3+.
Unique Identifiers
Mindat ID:
46590 (as Skolite)
1710 (as Glauconite)
1710 (as Glauconite)
Long-form identifier:
mindat:1:1:46590:2 (as Skolite)
mindat:1:1:1710:3 (as Glauconite)
mindat:1:1:1710:3 (as Glauconite)
GUID
(UUID V4):
(UUID V4):
ca1e3fb1-3c3a-4fe7-accb-165c850be48e (as Skolite)
528f89ac-eabc-451a-adf9-95ceeae5dfa4 (as Glauconite)
528f89ac-eabc-451a-adf9-95ceeae5dfa4 (as Glauconite)
Physical Properties of Skolite
Greasy, Earthy
Colour:
Dark green, grey green, yellowish green
Hardness:
2 on Mohs scale
Hardness Data:
Measured
Comment:
About 2
Density:
2.508 - 2.572 g/cm3 (Measured)
Comment:
Principally 2.555
Optical Data of Skolite
Type:
Biaxial (-)
RI values:
nα = 1.559 nβ = 1.581 nγ = 1.586
Max Birefringence:
δ = 0.027
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:
Moderate
Pleochroism:
Visible
Comments:
Distinct
X = pale yellowish green
Y = Z = yellow green, herb green, emerald green
X = pale yellowish green
Y = Z = yellow green, herb green, emerald green
Chemical Properties of Skolite
Formula:
H4K(Mg,Fe2+,Ca)(Al,Fe3+)3Si6O20 · 4H2O
First Recorded Occurrence of Skolite
General Appearance of First Recorded Material:
Found as veinlets and ribands in the sandstones of the Kl6dka quarry
Synonyms of Skolite
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.
References for Skolite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
K. Smulikowski (1936) Arch. Min. Tow. Nauk. Warszaw (Arch. Soc. Sci. Varsovie), 12. 145 p. 179
Internet Links for Skolite
mindat.org URL:
https://www.mindat.org/min-46590.html
Please feel free to link to this page.
Please feel free to link to this page.
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Localities for Skolite
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.
Ukraine (FRL) | |
| http://www.minsocam.org/ammin/AM23/AM23_541.pdf |