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Mineral Specimens with Calcite
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15.2 x 9.4 x 8.0 cm. A UNIQUE and DAMATIC vertical LARGE CABINET millerite specimen from the famous Ollie, Iowa locality. Three stacked vugs, the top one hidden, stand out on the front of the limestone matrix, which is capped by highly lustrous, blocky calcite. The lower and upper vugs host soft, hair-like needles of millerite. The lower vug is 2.9 x 2.5 cm. The two lower vugs are lined with glassy quartz crystals. It’s weird, that the middle vug has no millerite, except in a small vug just at the top of it. This is choice material from this famous locality, probably collected in the 1960s or 70s and is from the Gary Hansen Collection. The Hansen’s Hut label dates the piece to his time period.
2.0 x 2.0 x 1.6 cm. Highly lustrous, sharp, black franklinite octahedrons aesthetically set in calcite matrix form a very showy thumbnail from the famous Franklin Mine. Ex. Dick Jones Collection.
9.4 x 7.4 x 3.5 cm. An OUTSTANDING and showy combination specimen from the famous Franklin Mine of RARE, discrete tephroite crystals to 5 mm, foliated, rust-red zincite and blocky calcite. Super orange fluorescence on the calcite. Ex. George Elling Collection.
4.8 x 3.1 x 2.6 cm. What a stunning Eastern European calcite! You have these two perfect, same-sized balls of lustrous, pearly crystals, complete all around, sitting side-by-side on a carefully-trimmed base of calcite crystals wrapped around a chalcopyrite core. The calcites are actually rhombohedral in form, tightly intergrown.
6.9 x 4.1 x 2.9 cm. A sharp single crystal with a bit of matrix, distinguished by internal inclusions of hematite that outline a fine internal phantom. Leiping calcites of this form are not generally seen as fine singles trimmed out such as this.
11.1 x 6.6 x 6.4 cm. This specimen is so much better in person - the calcite just glows with gemminess, and has a very slight golden tone. It is just a fabulous calcite twin in pristine condition. It measures 4.4 cm. with a very distinct twinning plane running down the center. The crystal sits on a bed of small, sparkly quartz crystals.
15.6 x 8.9 x 6.1 cm. A beautiful and sizeable Sweetwater piece, featuring two calcites of the characteristic translucent-to-transparent golden color, the larger measuring 6 cm. They sit on a matrix decorated with brassy chalcopyrites, nicely contrasting with the underlying calcite crystals.
14.4 x 12.4 x 9.2 cm. A large, rich and very old English calcite specimen, STUDDED with fine crystals! Some are short and stubby, and others are more elongated and prismatic. They have pyramidal terminations, and a wonderful shiny luster. Inclusions in the smaller underlying crystals give them a dark brown color which provides a pretty contrast for the larger crystals that came later. Ex. Charles Pennypacker Collection, over 100 years ago.
5.1 x 2.9 x 2.5 cm. A fine scalenohedron of calcite from a place not much known for fine mineral specimens! These turn up only occasionally on the market. To boot, this translucent crystal has a very sharp PHANTOM inside of it! The phantom is caused by inclusions of cinnabar (this is a famous locality for cinnabar and mercury species).
3.4 x 3.4 x 2.3 cm. These calcites were hard to photograph. In person, they are INTENSELY gemmy, with high luster and very subtle striations on the faces. They sit beautifully on a carefully-trimmed, contrasting matrix of black crystalline ilvaite.
7.2 x 5.3 x 5.1 cm. A single BIG ball, over 5 cm across, that is absolutely perfect and complete! The specimen is perfectly trimmed out, with a neat base of slightly tan-colored calcite providing a color contrast.
5.6 x 3.2 x 2.9 cm. A very gemmy, light tan crystal of calcite with fine luster, measuring 3 cm, is surrounded by snowy balls of gyrolite. A very aesthetic combo specimen from the Bombay area.
7.8 x 5.5 x 5.2 cm. Dal’negorsk has definitely become one of the premier contemporary sulfide produces localities around. The mine is still active and manages to produce amazing quality sulfides that do not receive the appreciation they deserve. The piece is comprised of flatted, white "discs" of Calcite stacked upon one another to form long, narrow crystal aggregates. The Calcites are associated with highly lustrous, silver colored cuboctahedra of Galena and jet black, sparkling twinned Sphalerite crystal matrix. Ex. Kosnar Collection.
14.5 x 12.0 x 5.5 cm. The locality at Bergen Hill dates back to the 19th Century, and some of the most classic of all New Jersey Trap Rock specimens were found around this area. This specimen is more than likely from the Erie Railroad cut as I have seen similar pieces in various collections from the same locale. It is comprised of translucent, light golden color Calcite scalenohedra which are associated with white blocky Apophyllite crystals and small acicular "sprays" of Natrolite on matrix. Ex. Kosnar Collection.
6.5 x 4.5 x 4.5 cm. English Calcites are among the most highly sought after and well known of any Calcite specimens around. The classic "heart-shape" or "butterfly" twins are known throughout the world for their classic form. This specimen consists of a few gemmy, sharp, colorless, well formed, "heart-shaped" Calcite twins with light red Hematite inclusions which are aesthetically sitting on matrix. Obtained in the late 1960’s. Ex. Kosnar Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Millerite, Calcite, Quartz from Ollie, Keokuk Co., Iowa, USA [db_pics/mdpics/MD-119623a.jpg]](db_pics/mdpics/MD-119623a.jpg)
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