Flint, Chert, and Jasper

Names for Microcrystalline Quartz all in an array of several colors.


A) If it has a vitreous luster on conchoidal surfaces, it is coarsely crystalline quartz.

B) If it has a dull luster on conchoidal surfaces, it is a variety of chalcedony.

C) If it is opaque, it is jasper, a variety of chalcedony.

D) If it is translucent and banded, it is agate, a variety of chalcedony.

E) If it is translucent and not banded, the name chalcedony is used.

Last edited by 1minute; 03/10/21.
1Minute