 | | Journal (issue) | | Care! ARIZONA WULFENITE Down Deep in the Rowley Mine GEM GARNETS Popular for Centuries THE BALTIMORE...TRIP: www.rockngem.com Diamond Hill Quartz Winter Rockhounding in South Carolina RG_RED_cover_0914.indd...toxic. This 6 cm spray of needles is from the Herja mine (Baia Mare, Maramures), Romania. (Gerhard Brandstetter...common sense FIELD TRIP by Steve Voynick Diamond Hill Quartz ................................. 52 Underground...22 This Arizona mine is a specimen treasure trove Winter rockhounding in South Carolina by Wayne Peterson |  | | Journal (article/letter/editorial) | | photo March/April: Fluorite, Dow Scar vein, Hilton mine, Scordale, Cumbria, England; Jesse Fisher specimen...May/June: Uvite, Powers farm, Pierrepont, St. Lawrence County, New York; Steven C. Chamberlain specimen, Michael...July/August: Microcline, quartz, and albite, Kestral Pocket, Smoky Hawk mine, Teller County, Colorado; Martin...September/October: Gold and quartz, Colorado Quartz mine, Mariposa County, California; Scott Rudolph specimen...York City, New York County, New York State, R. B. Cook, 244–52 Amethyst, South Carolina, 66–68 Amphibolite |  | | Book | | content, it is much less useful. For example pure quartz is colourless, but may be of almost any hue through...usually white and often too hard to powder easily. Quartz has a typical o·ystal form of six-sided prismatic...Adamantine highly reflective like diamond Vitreous glassy, as in quartz Resinous like resin, as in amber...minerals having no lustre 7 INTRODUCTION A diamond has few weaknesses and many strengths: it is the...Gypsum 7 Quartz 3 Calcite 8 Topaz 4 Fluorite 9 Corundum 5 Apatite 10 Diamond SPECIFIC GRAVITY |  | | Book (edition) | | Geology of Vermont, and the latter on that of South Carolina. has been received in various ways from Prof...aditus, an entrance.] horizontal entrance to a mine. An oxyd Alkali. and taste, soda. Alkaline...55. To gradually pass Quartzose. Containing quartz as a principal ingredient. Radiated, 53. Rake-vein...Siliceous. Consisting of, or con- taining silex, or quartz. Silky, 56. A Silurian. term applied fossiliferous...distinguished from others ticles {feldspar) (quartz) that have a glassy appearance. It is a popular |  | | Book (edition) | | SILICA III. l. AND SILICATES. SILICA. 253 Quartz Opal 259 2. SILICATES. General Remarks.- 262...MINERALOGY. 3. Minerals differ in hardness from the diamond at one end of the scale to soapstone at the other...other distorted crystals. Occasionally, as in the diamond, the planes of crystals are convex; and then, of...sometimes called a quartzoid, because it occurs in quartz. (3) Twelve-sided double pyramids. Two planes of...rhombohedrons. They are combined in Figs. 20, 21, forms of quartz. Ehombohedrons vary greatly in the length of the |  | | Journal (issue) | | Scovil photo. Vanadinite, 2.4 cm, from the Apache mine, Arizona. Collected by Evan Jones; Jeff Scovil photo...Miglioli photo. Fluorite, 7.4 cm, from the La Barre mine, France. Collected by Aubin Cosson; Niels Brouwer... from left: Caledonite, 1.1 cm, from the Reward mine, California. Collected by Jeff Lines; Ben DeCamp...Thrill of Discovery by Wendell Wilson Epilog: On Mine Safety UThe Field-CollectorsV Anthony J. Albini...the words of the original discoverers. Adelaide Mine, Tasmania, 1971, 2012 Albert Chapman wrote one such |  | | Book (edition) | | point to a yard or more in diameA single crystal of quartz, now at Milan, is three and a quarter feet long...of quartz near the Tiefen Glacier, in Switzerland, discovered in has afforded 1867, smoky quartz crystals...the term crystal was applied only to crystals of quartz (f. 1), which the ancient philosophers believed...called the being a common form of crystals of diamond. liedron of JSauinanh. to It is the its in...in the annexed figure (f. 155) of a crystal of quartz, in which there are only three planes, 2-2 at each |  | | Book (edition) | | point to a yard or more in diameA single crystal of quartz, now at Milan, is three and a quarter feet long...and seventy pounds. single cavity in a vein of quartz near the Tiefen Glacier, in Switzerland, discovered...discovered in a 1867, has afforded smoky quartz crystals weighing in the aggregate about 20,000 pounds considerable...the term crystal was applied only to crystals of quartz (f. I), which the ancient philosophers believed...hexakisociato its being a common form of crystals of diamond. hedron of Naumann. JB. Hemihedral Forms. the |  | | Book (edition) | | ^ fe o -• vO y MINERALOGY AND MINING. Mine Accidents —Ventilation — Ore Dressing, Etc. DESCRIPTIVE...lific of valuable treats and advice." PRACTICAL MINE VENTILATION. WILSON. For the Use of Mining Engineers...above, there is also the department of Economic Mine) alogy, which is not here and (3) in the coarser...point to a yard or more in diameA single crystal of quartz, now at Milan, is three and a quarter feet long-...of quartz near the Tiefen Glacier, in Switzerland, discovered in 18fi7, has afforded smoky quartz crystals |  | | Report (issue) | | * Gold was discovered in the region in Powell County in 1852. Mining began in the 1860's, and since...St. Marys-Helena Valley fault Big Belt Mountains South of St. Marys-Helena Valley fault Great Falls tectonic...(Silver Creek) district Black Mountain-Stemwinder Hill subregion Geologic setting Mineral deposits Ophir...distirct Dog Creek area Austin district Stemwinder Hill area North Boulder Mountains subregion Geologic...Creek district Silver Wave vicinity Giant Hill Diamond Hill Morning Glory Indian Creek placers Other deposits |
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