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Colorado Mineral Specimens
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OKH-799 Fluorite with Amazonite. Lake George, Colorado. Ex. Paul and Dawne Dunning Collection. Frosted white cubes with light blue/green amozonite. Two tiny cleaves, rubs or cube modifications (I can’t be sure even with magnification). Nice example. 3.5 x 2.1 x 1.8 cm. Old collection # on backside/ base. $40
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OKH-778 Fluorite Mt. Antero, Colorado. Ex. Paul and Dawne Dunning collection. A grouping of green octahedrons make up this 3 x 2 x 1.8 cm cluster. Good form, frosted surfaces, fluorescent, no damage. Certainly not one of the more common species found at the location Circ. 1982. $125
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OKH-944 Fluorite Amethyst Queen Claims, Mesa Co., Colorado. Ex. Paul and Dawne Dunning collection. This is a fine example of material from the mid 1980s. It is a large plate measuring 10.9 x 7.2 x 2 cm thick. It stands beautifully on edge displaying a damage free surface coated by green octahedral crystals. Minor spot is scraped at top right. $145
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OKH-575 Fluorite Silverton Colorado. Ex. Paul and Dawne Dunning Collection. A good grouping of gemmy crystals with frosted ex interiors. There form shows extensive stepped growth and they are up to 2.3 cm each. The plate of crystals majors for by 3.8 cm, is approximately 1.5 cm thick, it is glued into the base of a perky box. There is minor quartz and pyrite on the back edge of the specimen. Views well from all side. A good piece from a famous locality. No damage. $60
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OKH-644 Pyrite Alice Glory Hole, Fall River, Clear Creek County, Colorado. Ex. Paul and Dawne Dunning Collection. Another unusual pyrite, this one is a partial octahedron extensive octahedral overgrowths. There is minor dolomite/siderite? In a couple spots on the crystals surface. He measures 2.4 cm on edge and is 2.7 x 2.3 x 2.5 cm overall. Nice luster and in interesting piece. $65
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OKH-651 Quartz casts after Calcite Uncompahgre Mining District, Ouray County, Colorado. Ex. Paul and Dawne Dunning Collection. And attractive group of bright white casts after calcite. This cluster measures 5.4 x 4 x 3.2 cm and only has a few minor contacts around the edges. Backside is also well crystallized. No damage. $55
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OKH-693 Rhodochrosite on Quartz, Sphalerite and Pyrite Sweethome Mine, Park County, Colorado. Ex. Paul and Dawne Dunning Collection. 2.8 x 1.9 x 1.7 cm plate of deep red crystals to 1 cm each. All the crystals are clean, bright and damage free. An excellent TN example of this popular material. $160
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OKH-683 Rhodochrosite on Quartz American Tunnel Mine, Silverton Colorado. Ex. Paul and Dawne Dunning Collection. An exceptionally fine quality rhodo for a classic American location. The color is rich enough and the form clean enough to pass as a Sweethome Mine specimen. This fine TN specimen measures 3.4 x 3 x 2.2 cm overall with the largest crystal measuring 1.2 cm across or .7 cm on edge. It does fit in a perky box and is currently glued in place. Zero damage and very displayable. $280
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OKH-442 Rhodochrosite American Tunnel Mine, Silverton, Colorado. Ex Nancy Collins collection. Attractive pink rhombs to .5 cm each on micro quartz matrix. The specimen is damage free and measures 3 x 3 x 2.5 cm. $100
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OKI-589 Vesuvianite Italian Mountain, Taylor Park., Colorado. Ex. Dr. Steve Chamberlain Collection. A rare and fine example which measures 3.2 x 2.5 x 1.2 cm with crystals to .9 cm each. The crystals are gemmy and exhibit outstanding luster. There is some edge damage on one crystal but the others are wonderful. Light yellowish green color to these glassy crystals. An unusual find. 145$
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OKI-622 Amazonite Take Five Claim, Pikes, Peak, Teller Co., Colorado. Ex. Dr. Steve Chamberlain Collection. A wonderful, rich blue, green single crystal measuring 2.5 x 2.3 x 1.6 cm. It is almost a floater, double terminated, with only a small area of contact at its base. No damage, Nice form, excellent luster…competition grade example of this common material. Currently glued in a perky box. 70$
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OKI-435 Quartz pseudomorphs after Barite Grand Junction, Colorado. Ex. Dr. Steve Chamberlain Collection. I never knew this classic locality had pseudomorphs after its famous barite crystals, even though I’ve been there collecting. The specimen has a healed base and nice form. It consists of small, slightly diverging crystals in a packed group. The total length is 2.1 cm. Hematite red color and no damage. Here is your chance to own what must be a rare thing. 35$
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OKI-436 Goethite Lake George, Colorado. Ex. Dr. Steve Chamberlain Collection. A fine TN spray of metallic silver and iridescent blue gray crystals. The cluster appears to be a floater (now glued in a perky box) composed of tiny metallic silver colored crystals with larger (to 1.2 cm each) spraying in all directions from their surfaces. 3.1 x 2.5 x 1.5 cm overall. An aesthetic example of normally very unattractive material. 38$
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OKI-621 Amazonite Crystal Creek, Colorado. Ex. Dr. George Robinson Collection. A nice green/ blue single crystal of good form with minor manganese overgrowths. The crystal measures 3.6 x 2.5 x 1.4 cm and has base and back contacts. 25$
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OK-005 Pyrite Mammoth Mine, Central City District, Gilpin Co., Colorado. Ex. Dr, Steve Chamberlain Collection. Pretty TN specimen measuring 2.5 cm on longest face. High luster and sharp form to this complex crystal composed of a cube modified by a dodecahedron. The stepped growth on each face makes it attractive and very display worthy. Contact is only to a well concealed section of the base. Only micro rubs which are not distracting. 90$
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OKF-546 Gold Cripple Creek, Colorado. The specimen is composed of multiple plates of gold that total 1.2 cm across. A good example which is mounted on Styrofoam in a perky box. Sorry about the fibers in image. 90$
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OKF-463 Calcite Stalactites American Tunnel, Sunnyside Mine, Howardsville, Silverton District, San Juan County, Colorado. Ex. Dr. Steve Chamberlain collection, prev. Donald Briggs collection. Several bright white stalactites on matrix from a sit famous for its rhodos and fluorites. 3 x 2.8 x 1.8 cm. Mounted in a perky box. 22$
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OKF-643 Quartz Crystal Peak, Colorado. Ex. Dr. Steve Chamberlain collection. What a cool piece. Unusually translucent smoky quartz measuring 9 cm long. There is a minor piece of weathered rock attached and the specimen is double terminated. Basal termination is multiple and does have some dings. Other tip is very nice but also shows a tiny chip, only visible with magnification. This is an excellent Tessin habit quartz for this price….45$
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OKF-461 Rhodochrosite and minor Quartz American Tunnel, Sunnyside Mine, Howardsville, Silverton District, San Juan County, Colorado. Ex. Dr. Steve Chamberlain collection, prev. Donald Briggs collection. A 3.5 x 2.5 x 1.7 cm plate of light pink, micro crystals. Specimen is mounted in a perky box. Minor sulfides. No damage. 25$
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OKF-442 Rhodochrosite and Pyrite Sweet Home Mine, Silverton, Colorado. Ex. Nancy Collins collection. A great little specimen measuring 1.3 cm on its longest edge. Mainly composed of a floater rhomb with a pyrite imbedded in its base. One edge has a thin cleave which exposes the gem core (the cleave is far too thin to measure…maybe a couple hundredths of a millimeter thick. Far, far thinner than a piece of paper). A very lightly frosted surface makes the crystal look translucent on first inspection but it is actually transparent and a bright red color. A great thumbnail specimen in all regards. 195$
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OKF-137 Sphalerite with Siderite Eagle Mine, Gilman, Colorado. Ex. Jim Turek Collection. A superior display piece from Colorado measuring 9 x 5 x 3 cm. It sits on edge and displays a fully crystallized frontal face that is extremely aesthetic. The siderites are tabular and light tan in color and perfectly dispersed within the sphalerites. The sphalerites show two types of crystal face development: the first is highly lustrous mirror like faces, while the second harvest slightly lower luster with unique surface feature growths. A great specimen for the Colorado collector. $750
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OKF-075 Barite Grand Junction, Colorado. Ex. Dr. Steven Chamberlain collection. This large TN specimen measures in at 3.4 x 3.1 x 2.5 making it barely able to fit into a Perky box. The big crystals are clear with some veils of inclusions. An attractive, displayable specimen with no damage. 100$
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OKF-035 Rhodochrosite on Quartz with Sphalerite and Pyrite Sweet Home Mine, Alma, Colorado. Ex. Jim Turek Collection. Damage free piece with several rhodos to 1.5 cm each. Nice gemmy crystals that are networked into the quartz yet stand up well for display. The backside of the specimen is sawn flat as most are from this location. 7.5 x 6 x 2.5 cm thick. Add some color to your collection with this fine specimen. 500$
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OKE-096 Barite Stoneham, Wield County, Colorado. Beautiful, blue, translucent, double terminated crystals forming a cross shaped display. There is a tiny crystal which penetrates a termination on the large crystal which is cleaved, otherwise damage free. Measures 6.1 cm. Sorry, but the photo of this one is very poor. Fantastic piece for this price. 40$
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OKE-097 Barite Stoneham, Wield County, Colorado. Beautiful, blue, translucent, single terminated crystals in parallel growth. Damage free. Measures 5.6 x 3 x 1.3 cm. Fantastic piece for this price. 35$
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OKE-055 Barite Stoneham, Wield County, Colorado. Beautiful, blue, translucent, double terminated crystals forming an display. Damage free. Measures 7 cm. Fantastic piece for this price. 40$
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OKD-844 Barite Stoneham, Weld Co., Colorado. Ex. Dr. Steve Chamberlain Collection. A nice big grouping of parallel growh barites to 5.7 cm each. The crystals are a nice blue color, translucent to transparent and well formed. Basil contact and a small crystal missing on back. A very good specimen for this Colorado location. 80$
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OKD-836 Microcline Crystal Peak, Colorado. Ex. Dr. Steve Chamberlain Collection. A pair of double terminated feldspars which are low on luster but high on form. One measures 3.5 and the second 2.5 cm in length. Classic material. 75$
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OKD-753 Covellite Summetville, Colorado. Ex. Jim Turek Collection. 2.5 x 2.5 x 1.8 cm cluster of high luster, metallic crystals. Attractive specimen! 50$
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OKD-496 Rhodochrosite American Tunnel, San Juan Co., Colorado. Ex Nancy Collins Collection. Here is a fine thumbnail specimen measuring 1.9 x 1.8 x 1.4 cm. Most of the piece is composed of a single complex rhodo of good color. Nice associations if pyrite and quartz add color and character. Zero damage. In Perky box. 70$
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OKD-497 Rhodochrosite American Tunnel, San Juan Co., Colorado. Ex Nancy Collins Collection. 1.5 x 1.5 x .9 cm rhomb of rhodochrosite on crystalline and massive quartz. Overall dimensions are 4.5 x 3.5 x 2 cm. This piece has an old style collection number on its base as well as some residual Styrofoam from a previous mount. The crystal is beautifully formed and resting up high on the matrix. A nice specimen from a classic American locale. 350$
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OKD-498 Rhodochrosite American Tunnel, San Juan Co., Colorado. Ex Nancy Collins Collection. A small grouping of deep ping interlocking, tabular rhombs to 1.2 cm each. The cluster is 2 x 1.2 x 1 cm and has what appears to be minor crystals of sphalerite. Every view is a good one on this piece. A very attractive and desirable thumbnail specimen. 65$
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OKD-499 Rhodochrosite Sweet Home Mine, Alma, Colorado. Ex Nancy Collins Collection. 2 cm gemmy rhomb with about 50% clean faces and 50% cleaved and having matrix contact. Minor quartz and a visible inclusion of sphalerite or tetrahedrite. Cherry red and great translucence. 125$
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OKD-371 Manganocalcite Ouray, Colorado. Ex. Nancy Collins Collection. The grouping of crystals here measures 8 x 4 x 2 cm and is a pleasing pink color which is slightly darker than the photo indicates. Individual crystals reach 5 cm. On backside there is a crystal that is cleaved off. Wonderful front view. 320$
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OKD-312 Rhodochrosite American Tunnel, Silverton, Colorado. Ex. Nancy Collins Collection. Rhodo rhombs coated by quartz druze on the main face of this small cabinet specimen. On top of this is a single rhomb of pink rhodochrosite which measures 1.5 cm on edge. There is a chip (cleave) on one corner. Other areas are very rough which appears to be in-situe damage or growth or both. I priced this as being natural (and bought it as such). Now I question this enough to feel I have to cut the price in half. It displays nicely several ways and is still a quality specimen. Great North American classic at a fine price. Not 1,500….750$
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OKD-154 Pyrite and Bravoite Colorado. Ex. Dr. Steve Chamberlain Collection. Wards Mineral piece with old tag. 5 x 3 cm display face on this metallic specimen is fully crystallized. Appears to be all pyritohedrons of moderate luster. I know nothing about bravoite so can’t comment on it. 50$
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OKD-124 Rhodochrosite and Pyrite on Quartz Sweethome Mine, Alma Colorado. Pink rhodos to .7 cm on edge resting on bed of quartz and some minor pyrites. Good representative specimen but certainly not one of those killers costing thousands. 50$
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OKC-071 Sphalerite and Calcite? Gilman, Colorado. Acquired from Dottie Herman, circ. 1964, Ex. Dr. Steve Chamberlain Collection. Great old Colorado piece which measures 7. 5 x 5 cm. It is a plate which has nice bulges of sphalerite crystals to .4 cm each. Calcites? are tabular and up to .7 cm each. Classic material. Very fairly priced at 80$
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OKB-615 Dolomite pseudo. After Orthoclase Kokomo, Colorado. Ex. Dr. Steve Chamberlain Collection. Great twins which display nicely. 50$
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OKB-954 Feldspar? Quartz? Pseudo by Tourmaline???? Lake George, Colorado. Self collected piece from many years ago. Came from a small pocket which contained nice quartz crystals and a couple of these weird things. Small unknown crystals on the surface. In TN perky box. 18$
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OKB-576 Goethite Pseudomorph after Pyrite Colorado. Ex. Dr. Steve Chamberlain collection, acquired from Ward's, Prev. C. B. Sawyer collection #182. Big 5 cm pseudo. Classic, just wish I had a more specific location. Big crack on one side but very stable. Great value for some Colorado collector at 130$
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OKB-264 Amazonite Crystal Creek? (maybe Crystal Peak), Colorado. Super color to this individual 3 x 3 x 2.5 cm crystal. In perky box. 12$
