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LocalitiesWave Hill station, Kalkarindji (Wave Hill), Victoria-Daly Region, Northern Territory, Australia

4th Jun 2015 17:04 UTCStephen C. Blyskal Expert

Prehnite from this part of Australia has long been known as the finest "lemon-yellow" jewelry grade. I obtained faceted beads of this mineral in NYC long before the Mali workings were known or exploited for the bead trade. Until recently this material was hard to obtain in specimen pieces since it was usually "fossicked" by individual collectors who then marketed their limited finds. About 8 years ago a fellow collector came back from the Tucson show with a carving of a koala on a branch done in prehnite. Since this was marketed by an Australian firm, this may mark the beginnings of the current commercial exploitation of this deposit. In the last few years more rough material in the form of slabs and slabbed nodules has appeared on Ebay. Recently the The Gem Shop (www.thegemshop.com) announced they were carrying it as rough nodules and sliced nodules. Also, a fellow dealer came back from this year's Tucson Show (2015) with a large (12" x 12" x 3") piece of polished prehnite showing crystal faces on the rough side of the nodule. This is now in my collection. It is the biggest piece from this locality I have ever seen. Once I photograph it I will put it on Mindat. The Gem Shop has some interesting photos of the mining operations on their web page for the nodules ($75 per 5 lb lot). They also have some interesting information about the locality.

4th Jun 2015 17:45 UTCReiner Mielke Expert

Looking forward to seeing it!
 
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