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Mineral Specimens with Quartz
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9.0 x 6.7 x 6.4 cm. A matrix of tan albite is the host for a magnificent smoky quartz crystal, 8.3 cm in length. The quartz is dark black, glassy and gemmy and has a central termination surrounded by parallel growth crystals, giving it a cityscape appearance. This is a textbook example of a fine, pristine, smoky quartz specimen. Rarely do you get them in this size range, for some reason they are usually either smaller and slender, or bigger and fatter (with often, more damage). A superb piece from this new find.
8.8 x 2.5 x 2.0 cm. The unusual characteristic of this light smoky, glassy and gemmy, quartz specimen is that certain faces exhibit preferential etching, especially the larger 8.5 cm-tall crystal. The etching is most obvious near the termination of the larger crystal. Light, pleasing color and very gemmy.
10.0 x 3.9 x 3.7 cm. Rolling hills of glassy and gemmy, sparkling, colorless drusy quartz are the matrix for frosted, translucent, pastel sea-foam green octahedrons of fluorite, to 1.2 cm in length. The color, luster and texture differences seriously enhance this specimen. Some parts of the quartz fluoresce a bright green but the fluorite crystals fluoresce an intense purple.
6.6 x 5.6 x 3.2 cm. A drusy, gemmy and sparkling, colorless quartz matrix is the host for several frosted, translucent octahedrons of pastel, sea-foam green fluorite, to 1.8 cm across. Under fluorescent light, some inclusions within the quartz are a neon green color but the fluorite is an intense neon purple color. Long-wave (purple fluorite, no orange) and Shortwave UV (green specks show inside quartz, no fluorite glow) photos are included (see additional photos).
7.6 x 5.5 x 3.2 cm. A drusy, gemmy and sparkling, colorless quartz matrix is the host for several frosted, translucent octahedrons of pastel, sea-foam green fluorite, to 1 cm across. Under fluorescent light, some inclusions within the quartz are a neon green color but the fluorite is an intense neon purple color.
6.9 x 5.7 x 3.4 cm. A thin septa of sparkling, colorless quartz druse has allowed crystals of frosted, translucent, sea-foam green fluorite octahedrons, to form above and below the plate. Very 3-dimensional. Average crystal size is 1.0 cm across but the cluster atop is about 3 cm. Under fluorescent light, the fluorite is an intense purple. Very aesthetic specimen, elegant, and rich with this new fluorite.
6.0 x 4.3 x 2.5 cm. This is a very unusual Himalaya mine tourmaline crystal, 3.5 x 2.2 cm, and varying to 1 cm thick. It is delicately but firmly ensconced in a doubly-terminated quartz crystal, making the whole piece a floater. A small, slender tourmaline is stuck inside, and shows just the tip coming out at the base of the major crystal. This is from the Irv Brown San Diego Collection, which was displayed at the Fallbrook Museum for number of years.
4.8 x 4.4x 3.9 cm. A perfect, totally pristine, translucent, 1-inch ball of botryoidal "fried-egg"-looking fluorite is here perched on a calcite crystal, on a pedestal of sparkling, white quartz points. Botryoidal fluorite is rare in nature, coming from only a few locales despite the worldwide abundance of the species. Ex. Dr. Stephen Smale Collection.
8.1 x 6.0 x 4.2 cm. A 1.6 x 1.4 x 1.3 cm, light "Blanchard-blue" fluorite cube beautifully set on vuggy quartz crystal matrix from the Blanchard Mine of New Mexico. The isolation of the single, lustrous, translucent and lightly frosted fluorite on this large of matrix is uncommon and exceptional. A specimen of this size usually has multiple fluorite crystals. The scattering of smaller, "ice-blue" fluorite cubes is a very nice accent. Contemporary classic material.
15.8 x 12.5 x 4.8 cm. A fine large cabinet specimen from recent finds at Jalgaon, India. The curved, snow-like, drusy quartz-lined vug is beautifully accented on the right with a 2.2 cm wide spray of sharp, very gemmy and glassy, green apophyllite crystals. A large, 3.2 cm wide x 3.0 cm high stilbite floret, 2 stilbite bowties (the largest is 3.3 cm), and a pair of crossed stilbite crystals nicely line up on the middle of the vug with the apophyllite spray. Nearly invisible, small, saddle-shaped heulandite crystals are scattered on the drusy quartz as a further compliment to this excellent, large, combination specimen.
3.9 x 3.2 x 0.8 cm. Groutite is a rare manganese oxide. Lustrous needles of groutite, to 4 mm, are richly scattered on both sides of the ribbed, quartz-replaced petrified wood. This specimen is from a remarkable and so far unique find in 1975. A miner who’d worked in the area for years brought in a small lot of specimens to a rock shop owned by Lolette Dalbeck in Ridgecrest, California. Ex. Mullane Collection.
14.5 x 13.8 x 7.8 cm. A spectacular Indian cabinet specimen of gem-like, colorless apophyllite crystals encrusting all sides of the drusy quartz stalactite matrix. The very glassy, pyramidal apophyllite crystals reach 4.5 cm on this specimen. The isolated crystal on the least covered side is 3.7 cm.
12.9 x 11.8 x 10.8 cm. A classic, old-time cabinet combination specimen from the Alston Moor District of England. This fine specimen features a 13.3 cm doubly-terminated, translucent, honey-colored calcite scalenohedron perched on the side of matrix. A lustrous, highly uncommon treasure lies underneath and on the side of the tiny calcite crystal rind: highly lustrous, black sphalerite crystals and a cluster of glassy, smoky quartz crystals. The smoky quartz crystals are rare for Alston Moor.
13.4 x 10.0 x 6.5 cm. Two nicely isolated sprays of glassy and lustrous, sea-green apophyllite crystals are very well placed on the curved vug covered with snow-like drusy quartz from recent finds at Jalgaon, India. Pearlescent stilbite blades are richly scattered about on the quartz, but are nearly invisible in the photo. A showy and excellent Indian cabinet combination piece.
3.9 x 2.4 x 2.4 cm. A classic, old-time and showy of pastel-pink rhodochrosite coating a complete all-around and undamaged, sharp, milky quartz crystal from the Oppu Mine of Japan. Excellent material from this historic locality. Ex. Ydren Collection.
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Rob Lavinsky, rob@irocks.com
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