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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)
A variety of Glauconite

A hydromica close to bravaisite, a variety of glauconite high in Al and Ca and low in Fe3+.


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Unique IdentifiersHide

Mindat ID:
46590 (as Skolite)
1710 (as Glauconite)
Long-form identifier:
mindat:1:1:46590:2 (as Skolite)
mindat:1:1:1710:3 (as Glauconite)
GUID
(UUID V4):
ca1e3fb1-3c3a-4fe7-accb-165c850be48e (as Skolite)
528f89ac-eabc-451a-adf9-95ceeae5dfa4 (as Glauconite)

Physical Properties of SkoliteHide

Greasy, Earthy
Colour:
Dark green, grey green, yellowish green
Hardness:
Hardness Data:
Measured
Comment:
About 2
Density:
2.508 - 2.572 g/cm3 (Measured)    
Comment:
Principally 2.555

Optical Data of SkoliteHide

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.
Surface Relief:
Moderate
Pleochroism:
Visible
Comments:
Distinct
X = pale yellowish green
Y = Z = yellow green, herb green, emerald green

Chemical Properties of SkoliteHide

Formula:
H4K(Mg,Fe2+,Ca)(Al,Fe3+)3Si6O20 · 4H2O

First Recorded Occurrence of SkoliteHide

General Appearance of First Recorded Material:
Found as veinlets and ribands in the sandstones of the Kl6dka quarry

Synonyms of SkoliteHide

Other InformationHide

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 SkoliteHide

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 SkoliteHide

Localities for SkoliteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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.
Ukraine (FRL)
 
  • Lviv Oblast
    • Stryi Raion
      • Skole
http://www.minsocam.org/ammin/AM23/AM23_541.pdf
 
Mineral and/or Locality  
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