Biotite on Anthophyllite | Czech Republic clear quartz the rocks are usually found

the rocks are usually found in Oklahoma’s Garber sandstone formations

and smokey quartz

More rarely they grow in chalcedony-like or opaline masses

5” and weighs 13oz

known for its vibrant color

Biotite on Anthophyllite | Czech Republic clear quartz the rocks are usually foundBiotite on anthophyllite refers to a common geological occurrence where dark mica (biotite) crystals grow within or around fibrous anthophyllite, an amphibole mineral, often forming attractive specimens with distinct textures like bladed crystals or nodular "balls," indicating specific metamorphic conditions (low HCl fluids). This item is 2 x 1 and weighs 1. 4 oz