Thursday, April 25, 2019
Home Tags Specimens

Tag: specimens

Mimetite: More Than An Imitator

By Jim Brace-Thompson Mimetite is a lead arsenate chloride mineral with the chemical formula of Pb5(AsO4)3Cl. In structure and appearance, it can closely resemble pyromorphite,...

Issue Highlights: November 2018

The latest issue of Rock & Gem is off to the printer. The November issue serves as a fine example of the sheer breadth...

MOST POPULAR

HOT NEWS