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Mineral Specimens with Millerite
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3.9 x 3.3 x 2.8 cm. A nifty, little limestone geode filled with soft, hair-like, brassy needles of millerite from the famous and now-closed Halls Gap, Kentucky locality. Fine, older and choice material from the Marty Zinn Collection.
6.2 x 5.1 x 3.7 cm. An ULTRA-RARE, unusual and SUPERB specimen of a radial bundle of brassy millerite needles embedded in and on a PRISTINE, transparent, light gray calcite rhomb from the famous quarries around Keokuk, Iowa. I have never seen a millerite specimen of this quality and association. Ex. George Feist Collection.
4.3 x 3.3 x 2.7 (largest). Two EXCEPTIONAL pieces from a LONG EXTINCT Milwaukee, Wisconsin locale of bright, brassy millerite needles in and on limestone matrix. The showy piece features a 1.8 cm wide, calcite-lined vug with a gorgeous spray of lustrous miilerite needles. The second piece has a 1.3 cm tall spray of bright millerite needles embedded on limestone matrix. These showy pieces were found in an old limestone quarry long ago. Ex. Richard Hauck Collection. Now illegal to collect here, as it’s a state park
4.9 x 2.6 x 2.5 cm. An OUTSTANDING combination specimen from Kladno, Czech Republic of bright, brassy, millerite needles to 8 mm nicely scattered in a vug with lustrous, gray dolomite rhombs. Seldom available in this quality from this locality. Excellent material from the Richard Hauck Collection.
4.8 x 3.0 x 2.9 cm. An OLD-TIME and CLASSIC specimen of bright, brassy millerite needle sprays RICHLY covering matrix on this historic specimen from the famous Louise Mine of Germany. The Louise Mine is an ancient iron mine that closed in 1930. This old-timer was in the Carl Bosch and Smithsonian Collections and includes Carl Bosch’s handwritten label. Carl Bosch was a very prominent European collector who lived from 1874-1940. The Smithsonian purchased his collection in 1965, which numbered 25,000 mineral specimens! The Bosch label number of 1601 indicates an old piece. Its rich in small crystals of high quality - he never collected junk. This dates to the late 1800s.
6.8 x 3.0 x 4.2 cm. Brassy millerite needles to 7 mm, in divergent sprays or as isolated needles, richly cover a chalcedony-lined vug in calcite matrix from this VERY UNCOMMON Illilnois locality for millerite - Hoopeston, Vermilion County. Ex. George Elling Collection.
4.3 x 4.0 x 3.0 cm. Two sprays of lustrous, greenish-yellow millerite needles to 1.4 cm are aesthetically set in a vug lined with yellow siderite discs and quartz in this showy piece from a classic Welsh locality - the Coed-Ely Coal Mine. Excellent and showy material from the George Elling Collection.
4.2 x 4.2 x 0.7 cm. An OLD-TIME and CLASSIC millerite specimen from the famous Gap Mine of Pennsylvania. This showy piece is a solid plate of brassy, acicular millerite needles. The Gap Nickel Mine was discovered in 1732, and was worked to some extent for copper. Nickel was discovered in the 1850s, as millerite and the mine was taken over in the 1860s by Joseph Wharton, founder of the Wharton School of Business at the University of Pennsylvania. The label states that the piece was collected in the 1870s. A historic classic. Ex. George Elling Collection.
3.7 x 3.5 x 2.2 cm (largest). A showy and excellent broken limestone geode with a shapely, elongate vug lined with very bright and brassy millerite needles. One half of the vug contains nearly all of the millerite needles and makes for an aesthetic pair. The specimen comes from a RARE, for the species, Indiana locality - the Lehigh Quarry in Mitchell. This limestone quarry opened in 1901 and is now closed. HIGHLY REPRESENTATIVE for the species and locality. Ex. Richard Hauck Collection.
15 x 10.6 x 2 cm. A large and very fine plate of large globular masses of dense Millerite needles, of a densely packed style not often seen for millerite. The largest of the aggregates is about 1.5 cm across. The plate actually has two generations of Millerite growth on it. A very good and unusually LARGE specimen from a famous and highly sought-after locality! Additionally, these are over 50 years old, I am told, and specimens are hard to obtain except from old collections. Ex. Charlie Key stock.
7.0 x 6.7 x 2.8 cm. A CLASSIC, OLD-TIME New York specimen from the historic Sterling Iron Mine at Antwerp. Brassy millerite microcrystals and black, bladed stilpnomelane microcrystals RICHLY cover both sides of this two-sided specimen. The highlight is a 6 mm spray of brassy millerite needles. Stilpnomelane is an uncommon layered silicate, related to mica and chlorite group minerals and this is a very highly representative specimen, with nice association. This old mine closed in 1910. Ex. Cilen and Elling Collections.
3.0 x 2.2 x 1.4 cm. Here is an adorable mini (actually fits in a Perky box), of rare millerite in the form of golden, acicular (hair-like) needles growing across the inside of a small geode.
5.2 x 4.1 x 2.4 cm. Double your pleasure with this showy and excellent specimen from the famous Halls Gap locality of Kentucky. Lustrous, brassy, felt-like millerite needles fill two isolated vugs lined with tan calcite crystals in this geode section. One vug has a really thick nest of millerite needles. Ex. Carlton Davis Collection.
5.5 x 4 x 1.7 cm. A very fine plate of large globular masses of dense Millerite needles. The largest of the aggregates is about 1.5 cm across. The plate actually has two generations of Millerite growth on it. A very good specimen from a famous and highly sought-after locality, long defunct. Ex. Charlie Key.
4 x 3 x 3 cm. This superb old classic millerite has a large spray of golden-metallic crystals showing, embedded in the chalcopyrite matrix around it. The tips of the freestanding crystals stick out the top of the piece, showing that this is not a contact cleavage fragment but rather a natural grouping of intact crystals enmeshed partly in the matrix. Ex. Carl Bosch Collection.
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Rob Lavinsky, rob@irocks.com
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