Microphotograph of a calcite geode found in a glendonite structure
by Sophie Graul, Tallinn University of Technology, Tallinn, Estonia and France
Microphotograph of a calcite geode found in a glendonite structure in Ordovician black shales. Micro mineralisations include hematite (black spherical crystals), goethite (red spherical crystals), sphalerite (silver automorphous crystals). The blue shape of the lower-right angle might be malachite.
Category
Location
- Europe (3778)
- Northern Europe (905)
- Estonia (43)
- Exact location (27.6833 E, 59.3945 N)
Tags
- shale (11)
- calcite (17)
- sedimentology (17)
- estonia (29)
- mineralogy (45)
- carbonates (5)
- ordovician (17)
Colours
Image properties
1984 × 1662 px;
image/jpeg; 2.2 MB
Taken in
2024
Submitted on 2 June 2024
Licence
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)
Credit
Sophie Graul (distributed via imaggeo.egu.eu)
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