Cordierite Flashcards
1
Q
What is Cordierite’s formula?
A
(Mg,Fe)2Al3(AlSi5)O18xnH20
2
Q
What is Cordierite’s crystal system?
A
orthorhombic 2/m2/m2/m
3
Q
What is Cordierite’s form?
A
anhedral crystals
may show pseudo hexagonal twins
4
Q
What is Cordierite’s cleavage?
A
poor {010}
5
Q
What is Cordierite’s hardness?
A
7-7.5
6
Q
What is cordierite’s occurrence?
A
medium and high grade politic metamorphic rocks
