Q292
Chlorites is a . . . . . . . . mineral
A.
2 : 2 type
AnswerB.
2 : 1 type
C.
1 : 1 type
D.
None of these
Answer: Option A
Solution
Answer: Option A
Solution:
The chlorites are a group of phyllosilicate minerals common in low-grade metamorphic rocks and altered igneous rocks. Chlorite forms blue-green crystals resembling mica.The general formula for chlorite is (Mg, Fe)3(Si, Al)4O10(OH)2·(Mg, Fe)3(OH)6. This formula emphasizes the structure of the group, as TOTO, and consists of alternating TOT layers and O layers. It is a 2 : 2 type.