SPECIAL AUCTION: OLD CLASSIC MINERALS
from the Kay Robertson Mineral Collection
ends Tuesday June 25th, 2019

NOTE SPECIAL END DAY: TUESDAY June 25, 2019
at 6:30 PM (Central Time Zone)!


The Kay Robertson collection has thus far afforded a great deal of intellectual and mineral pleasure to us here at The Arkenstone, as well as collectors around the globe. Many specimens are of historical and mineralogical interest, so working with them has been a truly gratifying experience.We thought it would be a fun change of pace to produce a totally dedicated "Kay Auction," and let things go where they may.
Please note that a number of these specimens were purchased by Kay 50-60 years ago, at prices that ranged from several dollars to several hundreds of dollars at the time. If these were the prices a half-century ago, just imagine what the possible values are now. There might be some real bargains to be had! Text and photos by collector, Jeff Starr.

For those unfamiliar with the Kay Robertson Collection,

Kay is a prominent California collector who specialized in European classics
(see our blog at www. https://www.irocks.com/kay-robertson-a-treasure-in-the-mineral-collecting-world ;
and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017).

Happy hunting!
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Dolomite
Eugui, Esteribar, Navarre, Spain
6.2 x 4.3 x 3.4 cm
Topaz and Opal (var. Opal-AN) (fl)
Artroyos Mine, Potrillos, Durango, Mexico
2.8 x 2.0 x 1.4 cm
Harmatome xls on Calcite (fl) on Amethyst
Setz Quarry, Idar-Oberstein, Rhineland-Palatinate, Germany
7.7 x 4.6 x 2.3 cm
Galena
Meggen Mine, Sauerland, North Rhine-Westphalia, Germany
7.5 x 4.1 x 1.6 cm
Calcite
Santa Eulalia District, Chihuahua, Mexico
6.8 x 6.3 x 4.2 cm
unusual Green Fluorite in Quartz
Bosenbrunn, Oelsnitz, Vogtland, Saxony, Germany
8.6 x 6.5 x 4.1 cm
Limonite ps. Calcite on Hematite
Schwarzenberg, Saxony, Germany
10.9 x 8.8 x 6.2 cm
Siderite on Quartz
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge District, Saxony, Germany
8.7 x 4.5 x 2.4 cm
Baryte with Cinnabar inclusions!
Clarashall Mine, Birkenfeld, Rhineland-Palatinate, Germany
8.4 x 6.3 x 2.9 cm
Quartz var. Agate, Quartz, and Opal-AN (fl)
Waldhambach, Annweiler am Trifels, Rhineland-Palatinate, Germany
10.9 x 9.1 x 2.1 cm
Chrome-Cerussite (fluorescent)
Magnet Mine, Waratah district, Tasmania, Australia
3.0 x 1.8 x 1.1 cm
Wavellite
Trenice, Czech Republic
9.6 x 6.4 x 3.5 cm
Fluorite , old classic ex Bosch, Smithsonian
Ehrenfriedersdorf, Erzgebirge District, Saxony, Germany
6.7 x 3.8 x 3.7 cm
Pyromorphite (Type Locality) on Baryte
Heilige Dreifaltigkeit Mine, Zschopau, Erzgebirge, Saxony, Germany (TL)
6.4 x 4.5 x 3.0 cm
Stichtite (Type Locality) on Serpentine
Argent Tunnel, Stichtite Hill, Dundas mineral field, Tasmania, Australia (TL)
5.3 x 5 x 3 cm
Fluorite (fluorescent) on Siderite
Luise Mine, Stolberg, Harz, Saxony-Anhalt, Germany
3.9 x 2.9 x 2.3 cm
Aragonite var. 'Flos Ferri' (fluorescent)
Styrian Erzberg, Eisenerz, Styria, Austria
7.1 x 5.5 x 4.4 cm
Leadhillite (Type Locality), Linarite - ex Barstow
Susanna Mine, Leadhills, South Lanarkshire, Scotland, UK
5.9 x 4.7 x 3.6 cm
Epidote and Humboldtine
Garnet Hill Mine, Garnet Hill, Calaveras Co., California, USA
5.5 x 3.8 x 3.5 cm
Calcite (fluorescent) and Chalcopyrite
Balmat, Balmat-Edwards Zinc District, St. Lawrence Co., New York, USA
6.8 x 4.9 x 3.9 cm
Cassiterite (twinned)
Zinnwald, Erzgebirge, Saxony, Germany
2.8 x 2.7 x 1.8 cm
Fluorapatite
Knappenwand area, Untersulzbach valley, Hohe Tauern, Salzburg, Austria
1.9 x 1.8 x 0.5 cm
Pyromorphite
Bad Ems, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
6.1 x 4.0 x 3.1 cm
Baryte with Fluorite and Pyrite
Berbes Mining area, Ribadesella, Asturias, Spain
5.1 x 3.8 x 1.8 cm
Bastnaesite-(Ce)
Trimouns Talc Mine, Luzenac, Ariege, Occitanie, France
3.1 x 3.0 x 2.7 cm
Aurichalcite and Hemimorphite
79 Mine, Banner Dist., Dripping Spring Mts, Gila Co., Arizona, USA
1.9 x 1.7 x 1.4 cm
Calcite (fluorescent)
Liskeard Mining District, Cornwall, England, UK
8.4 x 6.6 x 4.8 cm
Pyromorphite (Type Locality ! Very old specimen!)
Heilige Dreifaltigkeit Mine, Zschopau, Erzgebirge, Saxony, Germany (TL)
6.6 x 4.9 x 2.6 cm