Minerals
Primary focus of post is about a specific mineral (eg. azurite) or group of minerals (eg. copper minerals or carbonates)
PYRITE MATTERS: Iron Cross Twins – Part 2
Double Your Pleasure, Double Your Fun I’ve known about iron cross twins for a long time. It occurred to me that it was after many years of being a collector before I ever saw one. And while I have field-collected pyrite I have not found an iron cross twin. Occasionally I have found an iron …
PYRITE MATTERS: Iron Cross Twins – Part 1
Double Your Pleasure, Double Your Fun I’m always on the lookout for uncommon pyrite crystals. Iron cross twins have long held a certain fascination for me. But First, What Is An Iron Cross Twin? A twin crystal consists of two or more individual crystals joined following a defined crystallographic rule: along a common plane, rotated …