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Mineral Specimens with Quartz
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4.7 x 3.2 x 2.7 cm. A superb cluster of lustrous striated Schorls. Each crystal has fabulous luster, sharp attractive vertical striations, and the less-common trigonal terminations. The largest crystal, which is 2.7 cm tall and 2.2 cm across, is complete all the way around. Ex. Charlie Key.
4.9 x .8 x .6 cm. Often referred to as "Prase", these famous leek-green Quartz crystals are prized for their unusual and very attractive appearance. This single 5 cm crystal has excellent luster and a beautiful slender habit. The lower two-thirds of the crystal are the well-known green color, and the upper third is clear to reddish-orange. Ex. Charlie Key.
3.2 x 2.2 x 1.9 cm. A fine pseudomorph of Chalcedony after Calcite from the Namib Desert. The blades of what is now Chalcedony are delicate in nature, and fascinating in appearance. The largest, which is 1.6 cm across, is light tan and translucent. There are also very attractive dendritic growths (manganese or iron oxides) within the blade similar to what is often found in agates. Ex. Charlie Key.
8 x 6.4 x 4.2 cm. A sharp and distinctive twinned Chalcopyrite nestled among a forest of varying size Quartz crystals. The Chalocpyrite has a fabulous iridescent luster, and is over 3 cm long. Below the Quartz is more Chalcopyrite, Sphalerite, and Pyrite. Ex. Charlie Key.
11.8 x 7.6 x 6 cm. A fine specimen of translucent mint-green Prehnite from South Africa. The Calcite (6.9 cm across) is now replaced and composed of hundreds of fine .7 cm Prehnite blades and the sharp sides have been well-preserved. It sits up on a base of bladed-to-botryoidal Prehnite. Ex. Charlie Key.
9.3 x 3.5 x 2.8 cm. This near-floater is doubly-terminated, with the largest crystal having multiple basal terminations. The glassy and translucent crystal is included with hematite which has given the specimen an incredible fiery orange color. Ex. Charlie Key Collection.
9.3 x 8.1 x 7.1 cm. This matrix specimen consists of a cluster of rather equant, translucent quartz crystals to 5.0 cm in length. The color is incredible: The glassy crystals are heavily included with hematite, giving the crystals a very rich reddish color. Most of the crystals exhibit phantoms right at the very top of the terminations. Ex. Charlie Key Collection.
6.7 x 6.2 x 4.0 cm. On matrix, this is a beautiful cluster of hematite included, lustrous, reddish, quartz crystals, to 3.0 cm in length, even have a hint of amethyst. Ex. Charlie Key Collection.
4.7 x 2.9 x 2.8 cm. In this tightly grouped quartz cluster, all except the smallest crystals are sceptered. The gemmy crystals, to 4.0 cm in length are a combination of amethyst and smoky quartz. Ex. Charlie Key Collection.
5.7 x 2.6 x 2.3 cm. Secondary included hematite has colored the stem of this scepter a light rose color. This contrasts beautifully with the lustrous and gemmy termination, which has a distinct smoky color with a hint of amethyst. All around, a tertiary growth of flat quartz crystals sparkles. Ex. Charlie Key Collection.
8.4 x 6.2 x 3.4 cm. This matrix cluster exhibits dramatic yet understated characteristics. The flesh colored feldspar matrix gives way to a cluster of glassy and gemmy, hematite included quartz crystals which have taken on a wonderful orange hue. The largest crystal measures 3.9 cm in length. Ex. Charlie Key Collection.
8.6 x 7.6 x 4.5 cm. This matrix cluster of quartz crystals features three generations of growth. The first was that of milky quartz which was later overgrown by glassy and gemmy terminations which also had a dusting of goethite, giving all the crystals a smoky appearance. A third generation of hematite included quartz, with a light rose color, covered the lower 2/3 of the crystals. Each of the crystals, to 3.5 cm in length, exhibits magnificent phantoms created by the tips of the original milky cores. Ex. Charlie Key Collection.
5.9 x 5.4 x 3.2 cm. Looking very similar to a pincushion, this cluster of diverging, lustrous and gemmy, quartz crystals are all heavily included by hematite with most of the reddish-brown color in the terminal faces. The largest crystal measures 1.5 cm in length. Ex. Charlie Key Collection.
This Photo was Mindat.org Photo of the Day - 30th Aug 2008
9.4 x 9.4 x 8.2 cm. This aesthetic specimen is composed of two large, colorless and translucent quartz crystals. A second generation of hematite-included, gemmy quartz gives this specimen a lovely glow and slight surface coloration. The larger of the two crystals measures 10.0 cm in length. Ex. Charlie Key Collection.
11.5 x 11.4 x 7.3 cm. This is an intense amethyst specimen with sharp crystals on quartz matrix. These lustrous, rather equant, amethyst crystals are to 6.0 cm in length, complexly intergrown. Ex. Charlie Key Collection.
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Rob Lavinsky, rob@irocks.com
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