Stibnite is an Antimony Sulfide mineral. This complex cluster has Stibnite blades as long as 4 inches. The color is silver. It has a brilliant metallic luster. The piece has minor white Calcite blades.
This complex cluster has Stibnite blades as long as 4 inches. The color is silver. It has a brilliant metallic luster. The piece has minor white Calcite blades. The dilemma will be to decide which side to display as both sides are unique.
Location: Lushi County, Sanmenxia Prefecture, Henan Province, China.
Specimen Size: 4.3 x 2.6 x 0.9 inches
Specimen Weight: 3.4 oz.
STIBNITE is an antimony sulfide mineral. Stibnite occurs in hydrothermal deposits. It belongs to the Orthorhombic crystal system. Hardness is 2.0 on the Mohs scale. Stibnite is an important ore for antimony.
The largest application for antimony is as an alloy with lead and tin. Alloys of lead and tin with antimony have improved properties for solders, bullets, and plain bearings. Antimony compounds are prominent additives for chlorine and bromine-containing fire retardants found in many commercial and domestic products. An emerging application is the use of antimony in microelectronics.
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Cluster of large, purple, translucent FLUORITE crystals on white Quartz. Most of the cubic crystals are beveled and zoned with dark purple edges. The Fluorite fluoresces Blue under long-wave UV light. Specimen is 6.3 inches in length. Largest Fluorite cube is 0.6 inches long.
This piece glitters! Stunning color contrast of green Siderite “Blades” with brassy iridescent Chalcopyrite, whitish Calcite, and gray Tetrahedrite crystals in this specimen. The green blades of Siderite in this piece are very rare! Several of the Siderite blades are at least 0.5 inch long. The Calcite crystals are flattened and translucent. The luster of the Siderite is vitreous while the Chalcopyrite and Tetrahedrite have a brilliant metallic luster.
Peach colored TOPAZ crystal. The terminated end is rough but all of the sides are transparent. The white mineral is Albite (Feldspar). The Topaz can be cut into a gemstone. Topaz is the birthstone for November. This piece is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey in New Mexico.