|SULFUR MINERAL FACTS|
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Sulfur Mineral Facts:
Chemical Formula: S - It is native sulfur.
Hardness: 1.5 to 2.5
Cleavage: Imperfect, parallel to the prism (110) and tothe pyramid (111).
Luster:. Resinous luster. Transparent to translucent.
Optics: (Refractive Index): = a= 1.9579, b= 2.337, y= 2.2452
Recognized by its yellow color and the ease with which it burns. There are few minerals that are apt to be mistaken for sulfur. From all of them it may be distinguished by its brittleness and by the fact that it melts readily and burns with a nonluminous blue flame. At a temperature of 114 sulfur melts, and at 270 it ignites, burning with a blue flame and evolving fumes of SO2. It is insoluble in water and acids, but is soluble in oil of turpentine, carbon bisulfide and chloroform.
Localities and Origins:
Found in large deposits and in fine crystals near Girgenti,Sicily, associated with celestite, gypsum, calcite, aragonite, etc. Also found as fine crystals in conjunction with cinnabar and opal sinter at Steamboat Hot Springs near Reno, Nevada. Found in many areas in connection with the volcanoes of Mexico, Hawaii, Japan, Iceland, etc. In the United States it is found at the geysers of the Napa Valley, Sonoma County, and at Clear Lake, Lake County, California; at Cove Creek, Millard County, Utah; at the mines of the Utah Sulfur Company in Beaver County, in the same State; at Thermopolis, Wyoming, and at various hot springs in Nevada. The mineral occurs also abundantly in the Yellowstone National Park, but cannot be placed on the market because of high transportation charges. Massive forms are extracted through wells in Calsasieu Parish, Louisiana, and in Wyoming and Utah.
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Sulfur Crystals, Nevada
Please note that the author, Chris Ralph, retains all copyrights to this entire document and it may not be reproduced, quoted or copied without permission.
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