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!
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Chabazite (rare) Robertson Coll.
Wurmberg Quarry, Braunlage, Harz, Lower Saxony, Germany
5.0 x 3.0 x 2.4 cm
Amethyst (classic locale)
Amatitlan, Guerrero, Mexico
11.0 x 5.7 x 5.4 cm
Iridescent Chalcopyrite on Calcite (2015 find)
Baisha Copper Mine, Daye Co., Huangshi Prefect., Hubei Province, China
8.0 x 5.7 x 2.7 cm
Malachite stalactites on carved wood base
Liufengshan Mine, Chizhou Prefecture, Anhui Province, China
14.7 x 13.8 x 9.4 cm
Pseudocubic & Bipyramidal Wulfenite xls (old - rare) Robertson Coll.
Erupcion Mine, Los Lamentos, Chihuahua, Mexico
6.6 x 5.3 x 4.7 cm
Large Limonite ps. After Pyrite (RARE New Mexico) Tom Hales Coll.
El Paso Mine, Hanover-Fierro District, Grant Co., New Mexico
17.5 x 12.8 x 6.0 cm
Rhodochrosite (W.S. Logan Coll.)
Santa Rita Mine, Morococha District, Junin Department, Peru
7.3 x 4.6 x 1.5 cm
Bournonite, Chalcopyrite & Siderite (rare old classic) Robertson Coll.
Georg Mine, Willroth, Westerwald, Rhineland-Palatinate, Germany
8.8 x 8.2 x 6.2 cm
Large Prehnite (classic New Jersey) Robert Drift Coll.
Prospect Park Quarry, Prospect Park, Passaic Co., New Jersey
11.6 x 11.5 x 5.5 cm
Bog Iron (Limonite) - rare locale ex Dr. B. Phillips Coll.
Hudson & Leet-Bradley iron mines, West Stockbridge, Berkshire Co., Massachusetts
8.3 x 7.0 x 5.1 cm
Descloizite (Dr. B. Phillips Coll.)
Berg Aukas Mine, Grootfontein District, Namibia
6.1 x 4.9 x 4.0 cm
Vivianite w/ Siderite (Sanabria Coll.) - old classic
Morococala Mine, Dalence Province, Oruro Department, Bolivia
6.6 x 4.2 x 2.0 cm
Tiger Iron - Jasper/Quartz (Dr. B. Phillips Coll.)
Ord Ranges, De Grey Station, Western Australia, Australia
10.8 x 10.2 x 4.9 cm
Epidote w/ Quartz (Soregaroli Coll.)
Pampa Blanca, Ica Department, Peru
8.2 x 4.2 x 3.8 cm
Silver & Erythrite (Jason Herrmann & Barratt Coll.)
Kerr Lake Mine, Cobalt, Ontario, Canada
7.0 x 4.0 x 2.5 cm
Sharp Carrollites on large matrix (New Find!)
Kamoya South II Mine, Kambove District, Katanga, Democratic Republic of Congo
16.0 x 11.0 x 9.5 cm
Mineral Auctions