Question 4 (1 point) Tremolite and actinolite are calcic amphiboles which form a

Question

Question 4 (1 point) Tremolite and actinolite are calcic amphiboles which form a solid solution. Which physical properties would suggest that they have a similar structure, but not the same chemical composition? They would have different colours and have different cleavage planes. They would have the same cleavage planes and the same colours. They would both show a range of colours and have a range of different cleavage planes. They would have different colours and show the same cleavage planes. They would have the same colour but different forms/habits.

Explanation / Answer

4) *they would have the same cleavage planes and the same colour.

Tremolite and actinolite are similar to pyroxenes. These form cleavage planes and pyroxenes form cleavage angle of approximately 90 degrees.

5) *they are both amphibole minerals but have different structures

Tremolite and actinolite composed of tiny, interwoven, fibrous crystal that forms a tough hairlike mass in amphibole group .

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