Biotite on Anthophyllite | Czech Republic Kyanite or rose-color tint

or rose-color tint

37" x 2" and weighs 9

This is one of the few minerals that can form crystals ranging anywhere between gemmy and transparent to opaque and metallic-like

colored by trace elements such as titanium

5" and weighs 1lb

Biotite on Anthophyllite | Czech Republic Kyanite or rose-color tintBiotite 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 3. 5 x 2 and weighs 8. 0 oz