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In its purest state
and yellow
Biotite on anthophyllite refers to a common geological occurrence where dark mica (biotite) crystals grow within or around fibrous anthophyllite
75" x 2" and weighs 3
Bornite ”Peacock Ore” In matrix In its purest stateBornite is a copper iron sulfide mineral also known as peacock ore for its striking iridescent tarnish (blues, purples, reds) that develops on its fresh bronze brown surface as it oxidizes, making it an important copper ore, found in hydrothermal deposits, valued for copper extraction, and identified by its unique color change and metallic luster. This item is 2 x 1. 5 and weighs 4. 6 oz.
US$ 39.95
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US$ 39.95
US$ 59.95
US$ 39.95
