Microphotograph of a calcite geode found in a glendonite structure
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.
Reuse
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) (opens in a new window)Credit: Sophie Graul (distributed via imaggeo.egu.eu)
Properties
Type
Image
Format
JPG
Size
2.1 MB
Width
1984 px
Height
1662 px
Aspect
992:831
Taken
2024
Coordinates
59.3945, 27.6833
Tint
Dark grayish olive green
Submitted
2 June 2024
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