Wavellite: Avant Mine, Avant, Garland Co., Arkansas Dimensions x x cm. Thingofinterest: a phosphate mineral with formula F) WAVELLITE is perhaps the second best known collectable mineral in Arkansas, quartz being the first.
Silver Crystals: These silver crystals were electrochemically grown from a solution of silver nitrate, using silver electrodes. The field of view is 18 mm and is composed of 92 individual photos, combined using focus stacking.
A confession: I know NOTHING about geology or gems. But this stuff is amazing. (A rare moment of humility. This wine stuff works.i find this color enticing.and i know the reason, but i cannot speak to it.
Malachite with Chrysocolla Stalactite Crystal . A vivid turquoise blue Chrysocolla exterior has been partially polished to reveal an amazing interior of velvety concentric bands of darker and lighter green chatoyant Malachite.