PRE-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Sept 13, 2018

ends Thursday Sept 13, 2018
at 6:30 PM (Central Time Zone)

A HUGE selection of specimens in this week's auctions with a mix of gem crystals, classics over 100 years old, contemporary beauties and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the Ted Bartels and Barratt Phillips Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week's include:

1. Rare, rich old Cornwall CHALCOCITE & BORNITE
2. Superb large Indian APOPHYLLITE & STILBITE
3. Unusual large HEMATITE after MARCASITE from Egypt
4. Rich large CERUSSITE from Bunker Hill
5. Large AMETHYST w/ CALCITE from Brazil
6. Sculptural PYRRHOTITE "ROSE" from Trepca
7. Rare Arkansas TURQUOISE
8. RHODOCHROSITES from the Logan Collection including an illustrated piece
9. Classics, rarities and unusual pieces from the Kay Robertson & Barratt Phillips collections
- Old rare Norway EPIDOTE from the Des Cloizeaux and Paris Museum collections
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Large Pyrite Concretion
Dongchuan District, Kunming Prefect., Yunnan Prov., China
12.8 x 11.2 x 9.3 cm
Sharp Pollucite xl ex Obodda
Shigar Valley, Skardu District, Gilgit-Baltistan, Pakistan
3.3 x 3.2 x 2.3 cm
Hollandite (illustrated - RARE Nevada) Arthur Flagg & Barratt Coll.
Virgin Valley District, Virgin Valley, Humboldt Co., Nevada
8.3 x 8.0 x 2.3 cm
Fluorite & Quartz w/ Bertrandite (Robertson Coll.)
Akchatau Mine, Karaganda Region, Kazakhstan
10.3 x 7.0 x 3.0 cm
Baryte w/ Fluorite & Manganese Oxides (classic locale) Dr. B. Phillips Coll.
Clara Mine, Rankach valley, Oberwolfach, Black Forest, Baden-Wurttemberg, Germany
7.4 x 5.8 x 5.6 cm
Large Sulfur (rare Nevada) Dr. B. Phillips Coll.
Sulfur Pit, Crescent Valley, Eureka Co., Nevada
19.8 x 14.2 x 6.7 cm
Cobaltoan Calcite w/ Malachite (classic locale)
Mashamba West Mine, Kolwezi District, Katanga, Democratic Republic of the Congo
5.3 x 2.7 x 1.8 cm
Large Hematite ps. After Marcasite (Dr. B. Phillips Coll.)
White Desert, Farafra Oasis, New Valley Governorate, Egypt
14.1 x 5.3 x 5.1 cm
Fluorite (2 generations) w/ Hematite (Robertson Coll.)
Cacilia Mine, Freiung, Wolsendorf Fluorite mining District, Bavaria, Germany
13.3 x 8.5 x 5.9 cm
Large Spodumene (408 grams) Nowakowski Coll.
Pech, Chapa Dara District, Konar Province, Afghanistan
14.3 x 4.7 x 2.5 cm
Fluorite on Sphalerite (classic locale - fluorescent)
Gibraltar Mine, Naica, Chihuahua, Mexico
8.0 x 7.2 x 4.9 cm
Rhodochrosite on Sphalerite (illustated - Logan Coll.)
Trepca complex, Kosovska Mitrovica, District of Kosovska Mitrovica, Kosovo
4.1 x 4.1 x 3.2 cm
Sulfur (Joe Lobell Coll.)
El Desierto mine, San Pablo de Napa, Potosi Department, Bolivia
8.5 x 5.0 x 4.4 cm
Large Quartz incl. w/ Boulangerite (rare - Dr. B. Phillips Coll.)
Herja Mine, Baia Mare, Maramures Co., Romania
15.0 x 10.2 x 5.2 cm
Muscovite on Quartz (fine - uncommon NC) Ed David Coll.
Nello Teer Crabtree Creek Quarry, Raleigh, Wake Co., North Carolina
5.4 x 3.8 x 3.4 cm
Rhodochrosite w/ Bournonite (RARE Peru) Logan Coll.
Huinac mine (Winac mine), La Merced, Ancash Department, Peru
9.5 x 8.8 x 3.0 cm
Turquoise (RARE old Arkansas specimen)
Mona Lisa Mine, Porter Mountain, Gilham, Polk Co., Arkansas
10.2 x 7.0 x 6.8 cm
Copper after Analcime on Copper (RARE - old) Seaman Museum & Barratt Coll.
Seneca No. 2 shaft (Gratiot Mine), Seneca Mine, Mohawk, Keweenaw Co., Michigan
7.2 x 1.5 x 1.1 cm
Copper-included Proterozoic Stromatolites (Dr. B. Phillips Coll.)
Copper Harbor Conglomerate, Keweenaw Peninsula, Michigan
12.2 x 7.8 x 2.9 cm
Mineral Auctions