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7:31
YouTube
Quartz Academy
Feldspar group | Mineralogy | for NET-CSIR | SET | GATE | JAM Geology
Feldspar group. In mineralogy feldspar group is most important and interesting group with beautiful varieties of gemstones. Feldspar is the most abundant mineral in the earth crust with 1 - Plagioclase feldspar is 39 % 2 - Alkali feldspar is 12 % 3 - Quartz is 12% Silicate structure - Tectosilicate / Framework silicate Crystal System ...
29.1K views
Oct 17, 2018
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