Datolite & Chalcopyrite

For sale

Datolite – CaB(SiO₄)(OH)

Elements: Calcium, Boron, Silicon, Oxygen, Hydrogen

Class: Silicates – Nesosilicates

Crystal System: Monoclinic

Hardness: 5-5.5

Apatite

Talc (1)Diamond (10)

About as hard as a steel knife blade.

Chalcopyrite – CuFeS₂

Elements: Copper, Iron, Sulfur

Class: Sulfides

Crystal System: Cubic

Hardness: 3.5-4

Fluorite

Talc (1)Diamond (10)

Softer than glass. A steel knife scratches it.

Origin: Characas, San Luis Potosi – Mexico

More minerals containing Boron