Archive for 2014

15 Amazing & Natural Stone

Virgin Valley Opal

Bismuthinite

Formula: Bi2S3
System: Orthorhombic
Colour: Lead gray to tin white
Hardness: 2 - 2½
Name: From the composition.
Isostructural with: Stibnite

Read more : geologypage

Mrázekite

Locality: Assunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu District, Portugal

Ammonite Fossil, Terrarium and Craft Supply by LittleCrowGems

Raw pink tourmaline

White Agate & Carnelian - Madagascar

Delafossite

Formula: CuFeO2
System: Trigonal
Colour: Black, brown-white in ...
Lustre: Metallic
Hardness: 5½

Chalcopyrite with Quartz from Colorado

Elbaite with Muscovite on Albite Kara Valley, Azad Kashmir, Pakistan

Gold,
Rosia Montana, (Verespatak), Alba Co., Romania

Bornite coated Chalcopyrite with pink Calcite crystals - Mexico

Making gold green: New non-toxic method for mining gold

This green method extracts gold from crude sources and leaves behind other metals that are often found mixed together with the crude gold. The new process also can be used to extract gold from consumer electronic waste.