9idoces ((TALC pseudomorph after QUARTZ)), $25 MINIMUM BID, Johannes Mine, Fichtelgebrige, Franconia, Bavaria, Germany, 5.5 x 4 x 4 cm, Miniature | |
Here is a strange pseudomorph. Quartz, one of the harder minerals, replaced by Talc, one of the softest minerals. ex H Delsinger collection |