PRE-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Sept 6th, 2018

ends Thursday Sept 6th, 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. Rich and rare large matrix CARROLLITE from a New Find
2. Excellent MALACHITE after AZURITE from Milpillas
3. Selection of LARGE CABINET SPECIMENS
4. Large AMETHYST from Amatitlan
5. Rare VANADINITE from Namibia and fine old Los Lamentos WULFENITE
6. Striking Indian QUARTZ REPLACING CALCITE twins
7. Minerals and fossils from the Dr. Barratt Phillips Collection including many unique oddities!
Filter By

Vanadinite & Calcite (uncommon locale) Robertson Coll.
Namib Lead Mine, Rossing Mountains Area, Arandis, Erongo Region, Namibia
7.1 x 6.5 x 5.0 cm
Adamite (fluorescent!)
Mina Ojuela, Mapimi, Durango, Mexico
2.7 x 2.6 x 1.3 cm
Gemmy Aquamarine xls (NEW FIND)
Erongo Mts, Erongo Region, Namibia
5.3 x 3.6 x 2.6 cm
Galena on Quartz (very old classic) Robertson Coll.
Hannibal Mine, Heftrich, Taunus, Hesse, Germany
13.3 x 7.8 x 5.3 cm
Malachite ps. After Azurite
Milpillas Mine, Cuitaca, Sonora, Mexico
7.2 x 6.4 x 3.3 cm
Baryte w/ Marcasite (Dr. B. Phillips Coll.)
Bou Nahas Mine, Oumjrane mining area, Alnif, Draa-Tafilalet Region, Morocco
5.4 x 2.5 x 1.4 cm
Dolomite ps. After Aragonite (Dr. B. Phillips Coll.)
Cottonwood Draw, Chaves Co., New Mexico
4.6 x 4.0 x 3.5 cm
Gypsum (RARE New Mexico)
Vesley Mine, Granite Gap, San Simon District, Hidalgo Co., New Mexico
5.5 x 3.5 x 3.3 cm
Large Pyrite w/ Calcite (Dr. B. Phillips Coll.)
Buick Mine, Bixby, Viburnum Trend, Iron Co., Missouri
22.0 x 15.2 x 7.5 cm
Baryte w/ Chalcopyrite (classic locale) Robertson Coll.
Dreislar Mine, Winterberg, Sauerland, North Rhine-Westphalia, Germany
11.7 x 6.2 x 4.8 cm
Manganese Oxide (RARE Wisconsin) Noll & Barratt Coll.
Montreal Mine, Montreal, Gogebic Range, Iron Co., Wisconsin
20.2 x 17.4 x 9.4 cm
Hematite geode (RARE) Dr. B. Phillips Coll.
Volodarsk-Volynskii, Zhytomyr Oblast', Ukraine
12.6 x 8.2 x 7.1 cm
Pyrrhotite, Quartz & Galena (Dr. B.Phillips Coll.)
Trepca valley, Kosovska Mitrovica, District of Kosovska Mitrovica, Kosovo
7.0 x 5.5 x 3.2 cm
Pyrite after Pyrrhotite, Sphalerite, Galena & Calcite (RARE) Dr. B. Phillips Coll.
Casapalca Mine, Casapalca, Huarochiri Prov., Lima Dept., Peru
7.0 x 5.8 x 4.2 cm
Chrysocolla (Dr. B. Phillips Coll.)
Star of the Congo Mine, Lubumbashi, Katanga, Democratic Republic of the Congo
8.2 x 4.2 x 2.9 cm
Limonite ps. After Pyrite (Dr. B. Phillips Coll.)
Pelican Point Area, Utah Co., Utah
5.1 x 4.1 x 2.6 cm
Woodhouseite (Type Locality) w/ Quartz
Champion Mine, White Mts, Mono Co., California
5.0 x 4.2 x 2.3 cm
Hematite kidney ore (rare New Mexico locale and new find)
Iron Hill District, Dona Ana Co., New Mexico
5.4 x 3.5 x 3.4 cm
Strontianite (old - fluorescent) Robertson Coll.
Ahlen, Munsterland, North Rhine-Westphalia, Germany
5.4 x 4.7 x 3.8 cm
Cave Calcite w/ Aragonite & Hyalite Opal (Dr. B. Phillips Coll.)
Level 7, Southwest Mine, Bisbee, Cochise Co., Arizona
10.1 x 7.2 x 5.2 cm
Trilobite (Devonian) Dr. B. Phillips Coll.
Silica Shale Fm., Paulding County, Ohio
8.0 x 7.7 x 1.2 cm
Brucite (2015 find)
Kharan District, Balochistan, Pakistan
6.9 x 5.0 x 2.1 cm
Copper ps. After wood (post mining) Dr. B. Phillips Coll.
Copperopolis, Foothill Copper Belt, Calaveras Co., California
4.2 x 4.0 x 0.6 cm
Botryoidal Hematite
Irhoud Mine, Safi Province, Marrakech-Safi Region, Morocco
11.7 x 9.2 x 7.1 cm
Mineral Auctions