Biotite on Anthophyllite | Czech Republic clear quartz 5” and weighs 13oz

5” and weighs 13oz

5” x 5” and weighs 9

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

also known as Sand Rose or Gypsum Rose

This striking pendant features agatized dinosaur bone

Biotite on Anthophyllite | Czech Republic clear quartz 5” and weighs 13ozBiotite 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