Term used to describe a rock whose texture is influenced by the abundance of mineral grains between 2mm to 1cm.
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Tag: <span>G</span>
A common coarse-grained igneous rock mainly comprised of quartz, feldspar and mica
A sample of outcropped mineral collected for analysis and determination of its primary and trace constituents
Rust coloured staining caused by oxidation of iron suphides
A brassy, yellow coloured metal, being very dense, ductile and malleable, transported to the earths surface by the movement of often siliceous volcanic fluids and frequently found freed from its crustal origin by erosion. Used as currency and considered precious since the recording of human civilization
A group of diamond mines on the Krishna River in India, where the infamous Koh-I-Noor diamond was found
A sedimentary rock comprised chiefly of hydrated calcium sulphate. CaSO4·2H2O
A metamorphic rock consisting of usually finely banded crystalline layers
A yellow to orange oxide of uranium
Abrasions on rocks, minerals or landscape caused by the movement of glaciers and glacial material