Biotite on Anthophyllite | Czech Republic Hearts This item is 8” x

This item is 8” x 7” and weighs 22

Outside fluoresces a red and white

A fine example of classic Tri-State mineralogy and vintage American mining heritage

This item is 6” x 4

Also known as Orbicular Jasper

Biotite on Anthophyllite | Czech Republic Hearts This item is 8” xBiotite 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. 7 oz