Ethiopian Welo Opal (The Most
beautiful Ethiopian Opal)
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Types of Wall Rock Alteration Types of Wall Rock Alteration 1. P otassic alteration Ø Potassic (or K-silicate) alterati... -
Structural Control Ore Deposits Structure , tectonics and surface weathering play a vital role over geological time as a passag... -
D issemination “Disseminated” types of mineralization are formed by crystallization of deep-seated magma. The geological body in whi... -
M agmatic Or “ Mafic Igneous Intrusion Associated Deposits ” Syngenetic : The Ores are formed after their host rocks. Primary ... -
Agate is a banded form of finely-grained, microcrystalline Quartz. The lovely color patterns and banding make this translucent gemsto...
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