GIANT PRE-DENVER SHOW FINE MINERAL COLLECTION LIQUIDATION AUCTIONS - end Thursday, Sept. 7, 2017 (set 1 of 2)

Ends Thursday, Sept. 7, 2017
at 6:30 PM (Central Time Zone)

THREE PAGES FEATURING MANY SPECIMENS FROM OLD MINERAL COLLECTIONS! Most of the specimens here are from old stashes and purchased dealer inventories that you cannot as easily find in today's market as in the past.

We are honored to announce the purchase of several large collections including the fantastic Kay Robertson collection of 10,000 specimens, filled with European treasures and old classics accumulated since she started collecting in 1928 (see our website for more information: http://www.irocks.com/kay-robertson-a-treasure-in-the-mineral-collecting-world)!


Some of the highlights from this week's include:
1. Fine rare old Butte BORNITE pseudomorph
2. Excellent BENITOITE and NEPTUNITE plates
3. Classics and rarities from the Kay Robertson and Bruce Murphy Collections
4. Large Pennsylvania CALCITE
5. Old gem FLUORITE xls from the Heights Mine
6. RARE large pseudo of QUARTZ after CALCITE
7. Superb old Mina Ojuela ADAMITE ball
Filter By

Large Calcite (classic locale) ex Feist Coll.
Thomasville Crushed Stone Quarry, York Co., Pennsylvania
17.3 x 13.9 x 11.0 cm
Color-zoned Fluorite w/ Calcite (both fluorescent)
Lavrion District, Attiki Prefecture, Greece
8.6 x 3.8 x 3.2 cm
Chrysocolla on Malachite & Heterogenite stalactite (Dr. B. Phillips Coll.)
Star of the Congo Mine, Lubumbashi, Katanga, Dem. Rep. of Congo
10.7 x 3.6 x 3.5 cm
Unusual Smoky Quartz w phantom (Zerfass Coll.)
Diamantina, Minas Gerais, Brazil
15.9 x 6.4 x 5.0 cm
Fine old Pyromorphite (rare color) Kay Robertson Coll.
El Horcajo Mine, Ciudad Real, Castile-La Mancha, Spain
3.8 x 2.3 x 1.8 cm
Iridescent Pyrite
Milpillas Mine, Cuitaca, Sonora, Mexico
6.8 x 6.0 x 2.8 cm
Aquamarine w/ Albite, Muscovite & Schorl (Paul Otto Coll.)
Shigar Valley, Skardu District, Gilgit-Baltistan, Pakistan
7.7 x 6.0 x 3.4 cm
Lithiophorite (RARE Brazil) Kay Robertson Coll.
Sapucaia mine, Galileia, Minas Gerais, Brazil
3.9 x 3.6 x 3.0 cm
Malachite ps. After Gypsum (old classic) Kay Robertson Coll.
Apex Mine, Beaver Dam Mts, Washington Co., Utah
7.0 x 2.1 x 1.7 cm
DT gem Heliodor (Kay Robertson Coll.)
Volodarsk-Volynskii, Zhytomyr Oblast', Ukraine
3.1 x 1.3 x 1.3 cm
Smoky Quartz w/ Chrysocolla (RARE combo & rare locale)
Cobrena Mine, Acari, Caraveli Province, Arequipa Department, Peru
6.7 x 2.9 x 2.3 cm
Benitoite, Neptunite & Natrolite ex Kay Robertson coll
Dallas Gem Mine, San Benito Co., California
7.5 x 5.0 x 2.2 cm
Color-zoned Fluorite (classic locale - self-collected by Paul Zerfass
La Barre Mine, Puy-de-Dome, Auvergne-Rhone-Alpes, France
4.1 x 3.8 x 3.6 cm
Mineral Auctions