How to Use QAPF Diagram to Classify Igneous Rocks
QAPF diagram is a double triangle diagram which is used to classify igneous rocks based on mineralogic composition. The …
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What is Dioptase
Dioptase is a vivid emerald-green to bluish-green copper cyclosilicate mineral with chemical formula Cu₆Si₆O₁₈·6H₂O (Hydra…
Sedimentary Textures and Classification of Clastic Sedimentary Rocks
Sedimentary Textures Sedimentary textures are the physical characteristics of a sedimentary rock, including the size, shape…
Spectacular Elbaite
Elbaite Formula:Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) System:Trigonal Colour:Green, red to pink, ... Lustre:Vit…
Piecing together the Pangea puzzle
Thick black and magenta lines show northern boundaries of India and Arabia and southern boundary ofEurasian craton. Dash…
Lustrous Mimetite
Mimetite Formula:Pb5(AsO4)3Cl System:Hexagonal Colour:Pale-yellow, ... Lustre:Sub-Adamantine, Resinous Hardness:3½…
Connecting people and geology on volcanoes
A geologist walks on surface of lava flow from Hawaii's Kilauea volcano In October 2011, heavy rainfall poured down…
Nature Has More Than One Way to Grow a Crystal
Amazing specimen featuring gemmy Golden Calcite crystals inside a fossilized clam shell (Mercenaria Permagna)! From Ru…
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