Tin-Amzi W-Sn quartz veins, Ahaggar Mtn (Hoggar Mtn), Tamanghasset Province, Algeria
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These veins are rooted in the Tin-Amzi granite cupola.
Two types of fissural greisenization can be found :
- Mica-topaz greisen
- Mica-quartz-topaz greisen
Three phases of mineralization can be distinguished :
- W/Sn oxides - silicates
- Supergen alteration
6 entries listed. 5 valid minerals.
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