South Dakota Mineral Specimens For Sale

 

 

 

OKO-211

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OKO-211    Columbite   Etta Mine, Keystone, Pennington County, South Dakota.  Ex. Dr. Steve Chamberlain collection.  A single terminated (and crudely so) crystal of this uncommon mineral that measures 2.5 x 1.9 x 1.2 cm.  Nice metallic luster and uncommon locale.  No damage.  $60

 

 

 

 

 

OKN-863

OKN-863     Rockbridgeite    Big Chief Mine, Glendale, Pennington County, South Dakota.  Ex. Dr. Steve Chamberlain collection.  1.1 x 1 x 1 cm specimen with half being quartz and half being a massive vein of the rare mineral rockbridgeite.  In the vein is a vug with crude, damage free botryoidal groups.  It is an iron manganese phosphate hydroxide.  $40

 

 

 

 

OKK-573

OKK-573    Sinkankasite     Barker Mine, near Keystone, South Dakota.  Ex. Jim Turek collection.  Type locality...rare species.  Example for the systematic collector in a pill case.  Approx. 2.5 millimeter piece.  $50

 

 

 

 

 

OKM-744

OKM-744   Meta-Uranociricite    Duvier Mine, Lawrence County, South Dakota.  Ex Dr. Steve Chamberlain collection.  An attractive piece measuring 5 x 2.3 x 2 cm overall.  It is coated with tabular crystals of a vibrant yellow color that also are fluorescent.  A fine miniature sized example of this material with no damage.  $50

 

 

 

 

 

OKH-920

OKH-920    Barite    Owanka, South Dakota.  Ex. Paul and Dawne Dunning Collection.  A single terminated crystal of golden barite measuring 3 x 1.9 x 1.7 cm.  It is gemmy with moderate internal fracturing.  Surface luster varies greatly from glassy to slightly etched to dull and pitted depending on the face you observe.  Stocky well formed crystal.  No damage.  $25

 

 

 

 

 

OKH-593

OKH-593    Barite and Calcite     Elk Creek, South Dakota.  Paul and Dawne Dunning Collection.  This small cabinet sized example measures 5.9 x 5.2 x 3.4 cm.  The barite is 4.6 cm long, single terminated, very gemmy in almost all areas, has a wonderful luster, and is damage free.  There is breakage where it was attached to the interior of the vug, as would have to be expected, and one thin internal crack.  It sits on the typical yellow calcite providing a nice contrast.  The specimen stands on edge for display and looks really nice when it does so.  Classic American specimen.  $475

 

 

 

 

OKI-146

OKI-146     Pyrite     Orman Dam, Belle Forche, Butte Co., South Dakota.  Ex. Dr. Steve Chamberlain Collection.  An attractive 3.3 cm concretion which came out of the ground in 1990.  No pyrite disease problems with this fine specimen.  Damage free and displayable.  45$

 

 

 

 

 

OKF-191

OKF-191    Calcite on Calcite   Interior, South Dakota.  Ex. Nancy Collins collection.  A beautiful calcite on matrix measuring 10.2 x 5.8 x 5.2 cm.  The first generation of calcites are large yellow rhombohedrons.  This second-generation are clear to white nail head calcites in epitactic overgrowth.  They climb up the sides of some of the first generation calcites, even capping some of the terminations.  A beautiful display of crystals which is much better in person.  $175

 

 

 

 

 

OKD-378

OKD-378      Barite on Calcite   Elk Creek, Meade Co., South Dakota.  Ex. Nancy Collins Collection.  Certainly a classic American specimen that is uncommon to find on today’s market.  This one has a pair of parallel growth crystals which are transparent and a rich brown color.   The barites are up to 4.3 cm each rising off well formed, yellow calcites.  One crystal has a tip ding on its backside.  The specimen displays best with support so I have it attached to an acrylic plate at this time.  It is 7.5 x 5 x 2 cm in overall size and there is an exceptional luster to the barites.  950$

 

 

 

 

OKA-994

OKA-994 Schorl White Elephant Mine, Pringle, SD. Black crystals to 4.5 cm in rose quartz. 6 x 5 x 5 cm piece. Crystals are well formed but poor / no terminations. Unusual location. 8$

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