Montana Mineral Specimens For Sale



                             Barite                                                                                        Barite                                                                                              Variscite                                                                  Calcedony






OKP-650      Amethyst        Pohndorf Mine, Jefferson County, Montana.  Ex. Dr. Steve Chamberlain collection, prev. Tiffany Jewelers.  This is obviously an old specimen from an unusual locality.  It is doubly terminated, dirty lo0king but interesting.  The top half of the crystal shows excellent color, clarity, and is partially skeletal.  It measures 3.2 x 2.5 x 2 cm and has a historic tag affixed to it.  Minor chipping, but overall, in very good condition.  $95






OKO-393     Galena and Sphalerite    Sweetwater Mine, Montana.  Ex. Paul and Dawne Dunning collection.  This specimen measures 2.8 x 2.7 x 2.2 cm and has two fine galenas with many small surrounding sphalerites on matrix.  The patena is nice and what makes the piece really unique are the galenas on some surfaces that are in epitaxy.  Minor rubbing on one tiny area of the largest galena.  Very nice example.  Sits nicely and has minor Styrofoam on its base.  $65







OKO-418    Enargite and Quartz    Butte, Montana.  Ex. Paul and Dawne Dunning collection.  Here we see iridescent crystals of enargite resting on gemmy quartz.  The piece measures 1.4 x 1.1 x 1 cm.  No damage and it is mounted in a perky box.   $25







OKO-206    Lepidocrocite   Robert Mine, Cuyuna Range, Crow Wing County, Montana.  Ex. Dr. Steve Chamberlain collection.  A small opening in matrix with tiny bladed crystals.  Piece measures 1.7 x 1 x .6 cm.  Some crystals are crushed and some are excellent.  $15







OKO-337    Galena, Pyrite, Quartz    Sweetwater, Montana.  .  Ex. Paul and Dawne Dunning collection.  3.3 x 2.3 x 2 cm, very complete and well formed grouping of crystals.  Views nicely from all directions, typical luster, excellent aesthetics.  No damage and mounted in a perky box.  $45







OKO-184     Quartz Scepter (variety Amethyst)    Pohndorf Amethyst Mine, Jefferson County, Montana.  Ex. Dr. Steve Chamberlain collection, circ. 1970s.  A wonderfully colorful amethyst with dark phantom.  Edge chatter on termination but still worth acquiring.  2.2 x 2 x 1.5 cm.  Nicely mounted in a perky box.  $40







OKN-377       Barite       Indian Head Rock, Basin, Jefferson County, Montana.  Nicely formed, damage free example of this distinctive barite.  5.1 x 3.5 x 3 cm.  Base contact.  $30








OKM-999      Barite       Indian Head Rock, Basin, Jefferson County, Montana.  Ex. Harold L. Dibble collection.  4.7 x 4.3 x 3.2 cm.  The specimen is all blocky crystals most showing some of the typical cavernous surfaces filled by secondary growth barites.  Excellent color and translucence for the locality.  The specimen is damage free with healed faces and only a couple contacts under the base (almost a floater).  No damage anywhere.  Finding anything in really good condition from this location is sizes larger than thumbnails is difficult.  A very fine miniature of this material.  $380








OKM-750        Barite       Indian Head Rock, Basin, Jefferson County, Montana.  Ex. Nancy Collins collection.  Nice, large, translucent to transparent tabular crystals with grainy secondary growth barite crystals coating each termination.  Damage free, any contact is at base or on back.  Amber color, displays well.  $85









OKM-848      Barite       Indian Head Rock, Basin, Jefferson County, Montana.   By far, the finest example of this material that I have ever seen for sale.  Beautifully aggregated, not just jumbled together like most, with the largest crystal standing upright central to the piece.  Huge, measuring in at a whopping 11.3 x 8 x 6.4 cm.  the big crystal measures 7.6 cm on edge!!!  No damage and only expected edge contact.  The typical look...medium luster but bright when inspected on a micro level, amber color, good translucence, and the notable selective face overgrowths by smaller barites.  A museum grade specimen in all respects.  A thing of beauty in-hand.  $4,500








OKL-142    Pyrite    Butte, Silver Bow County, Montana.  A fine damage free cube with modifications.  Good luster and interesting surfaces dominated by moderate striations.  2 x 1.9 x 1.9 cm.  Mounted in a perky box.  $20







OKJ-589     Amethyst     Pohndorf Amethyst Mine, Boulder Batholith, Jefferson Co., Montana.  Ex. Dr. Steve Chamberlain collection.  A beautiful grape purple cap on a base of smoky color.  This scepter measures 2.6 x 2.1 x 1.6 cm.  Outstanding luster and form.  No damage.  Mounted in a perky box.  Very aesthetic.  $95








OKJ-582     Amethyst      Pohndorf Amethyst Mine, Boulder Batholith, Jefferson Co., Montana.  Ex. Dr. Steve Chamberlain collection.  A high luster, double terminated crystal with excellent color and form.  Measures 3.5 x 2 x 1.7 cm.  Minor skeletal development.  Very sharp and aesthetic.  Mounted in a perky box and damage free.  $45







OKJ-452    Enargite and Pyrite    Butte, Montana.  Ex. Nancy Collins collection.  A very high quality TN sized specimen from a classic North American location.  1.9 x 1.5 x 1.3 cm with both species being lustrous, well formed (very sharp!) and damage free.  Fine views from all sides. Some Styrofoam attached to base.  Excellent piece.  $140








OKJ-105    Pyrite and Quartz     Leonard Mine, Butte, Silver Bow County, Montana.  Ex. Paul and Dawne Dunning Collection.  Pieces like this scream “American classic!” and are always in demand.  Minor staining.  This one has some damage as can be seen and evaluated from the images, however the primary crystal is in decent condition and the specimen displays nicely.  I wouldn’t waste my time describing and listing this piece unless I thought it was worth someone’s time.  The interesting thing about the specimen is the complex form that the big pyrite shows.  The edges have interesting steps as modifications to the octahedron.  Other forms present, as well in this fine specimen which measures 5.4 x 3.6 x 3.5 cm.  The big pyrite is 2.8 cm across and lustrous.  It rests in quartz and pyrite matrix.  Showy and classic!  $220







OKI-445     Pyrite     Leonard Mine, Butte, Silver Bow Co., Montana.  Ex. Dr. Steve Chamberlain Collection.  A fine example from a classic locality noted for fine pyrites at one point in time.  This plat of crystals is damage free and measures 3 x 2.2 x 1.3 cm overall.  The luster, form and color are all great.  Another North American classic.  40$









OKF-441    Amethyst on Quartz.    Jefferson Co., Montana.  Ex. Dr. Steve Chamberlain Collection.  Prev. Donald Briggs collection.  This 3.3 cm wide piece displays two well formed amethyst crystals on the side of a smoky, lower luster quartz crystal.  The amethyst stick out to the sides like the ears on Mickey Mouse’s head.  Damage free and fully crystallized on all sides.  Attractively mounted in a perky box.  25$










Enargite closeup

OKF-032    Enargite on Pyrite   Leonard Mine, Butte, Montana.  Ex. Jim Turek Collection.  Showy specimen from a classic US locality.  This plate measures 6.5 x 5 cm and is about 2.2 cm thick.  The backside of piece is all pyrite and is partially crystallized.  The front has a large group of flattened enargite crystals to 1.5 cm which stand off the pyrite matrix.  No damage to this showy specimen.  500$









OKE-025     Quartz on Rhodochrosite    Butte, Montana   Ex. Nancy Collins collection.  Beautifully formed quartz sprays on pink rhodos to 1.3 cm each on edge.  No damage and very displayable.  Old collection number and some Styrofoam on base of piece.  8 x 6.5 x 5 cm.  Another American classic.  700$








OKD-500    Quartz on Rhodochrosite   Butte, Montana.  Ex Nancy Collins Collection.  I assume this is an Emma Mine specimen.  There is a nice spray of clear to milky quartz on this small but sweet thumbnail specimen.  Two quartz points are damaged, otherwise clean.  Mounted in Perky box.  2.1 x 1.7 x .6 cm.  Very attractive and well priced at  45$








OKD-347    Enargite   Butte, Montana.   Ex. Nancy Collins Collection.   A nice damage free grouping of crystals to 1.3 cm each.  High luster and very minor peripheral contact.  On a matrix of mostly pyrite.  2.2 x 2 x 1.8 cm.   90$








OKB-613    Goethite pseudo after Pyrite    Helena, Montana    OKB-616    Dolomite pseudo. After Orthoclase   Kokomo, Colorado.   Ex. Dr. Steve Chamberlain Collection.    Interesting pyritohedron that is twinned.  Crystal is 1.5 cm.  25$


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