Aragonite

Question 1

What is Aragonite’s formula?

Answer 1

CaCO3

Question 2

What is Aragonite’s crystal system?

Answer 2

Orthorhombic

Question 3

What is Aragonite’s hardness?

Answer 3

3.5-4.0

Question 4

What is Aragonite’s crystallography?

Answer 4

acicular or tabular

pseudohexagonal twins

Question 5

What is Aragonite’s occurrences?

Answer 5

rare compared to calcite
metastable at low pressure
deposited from some hot springs and biogenically in shells of some marine animals

Question 6

What is Aragonite’s polymorph?

Answer 6

Calcite