 | | Book | | Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic, plutonic and...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment,...major associations of Swiss hematite iron roses are quartz, ortboclase, albite, rutile, and zeolites (especially...as sharp rhombohedral crystals to 8 cm on and in quartz; the ilmenite crystals have uniform orange-yellow |  | | Journal (issue) | | For YourBookshelf 18 Bwlchglas Mine 20 Alpine Quartz L. Gautron 29 Muirshiel Mine 40 The Copper...on smoky quartz. Mont Blanc, France. Pink fluorite is one of the most prized associates of quartz in... sits on a small group of doubly-terminated smoky quartz. Frederic Escaut collection. Photo: Mick Cooper...discussed as we go to press. Only the smoky variety of quartz specimens were now available throughout...the 4th world war. The dry and desolate Ullswater valley in the Lake District providing superb halite and |  | | Journal (issue) | | times, major specimens of euclase, parisite-(Ce), quartz, pyrite and dolomite have also emerged. Episodes...of Muzo, occupies both slopes of a funnel-shaped valley above the little Itoco River, at elevations ranging...at 2300 meters above sea level, overlooking the valley of the Gauvi6 River, itself at 700 meters above...approximately 840 and 500 meters, respectively, above the valley of the Minero River, are the official guardians...Colombian emeralds. After penetrating the Guacheta Valley and receiving nine green stones as gifts from the |  | | Book | | Maria Gramaccioli. Matteo Boscardin. published in Italy in 1973 by Fratelli New Fabbri Editori. material...with its superb color States, illustrations in Italy in the lan- proved to be so well related to the...mineral collecting has become widespread here in Italy, as well as in the rest of Europe and America. Whether...(Val d'Aosta). southeast of Aosta in the extreme northwest part of Italy. 1 EQUIPMENT AND PREPARATION...grained granite rugated cardboard where of the quartz t it hits your ribs; then layer of newspaper |  | | Journal (issue) | | and Vail, Colorado. www.MardaniFineMinerals.com Quartz Cabiche, Colombia 14.5 cm CRYSTAL CLASSICS FINE...BUY COLLECTIONS & FINE INDIVIDUAL SPECIMENS Quartz var. Gwindel, Dodo, Russia, 11 cm Photo: Malte...Mineralogical Record, volume 51, March–April, 2020 Quartz var. open and closed Gwindel, Winterstock, Switzerland...Record, volume 51, March–April, 2020 Smoky and Rose Quartz, 15.4 cm Coronel Murta, Brazil Rudolf Watzl...notably pink amethyst crystals—a new color variety of quartz. The substantial reserves remaining should continue | | | Journal (issue) | | notably pink amethyst crystals-a new color variety of quartz. The substantial reserves remaining should continue...INTRODUCTION Amethyst is the purple variety of quartz colored by the presence of iron, activated by exposure...iron chromophore, and is not equiva lent to rose quartz, which derives its color from sub-microscopic inclusions...River, to the Afielo locality. In the Neuquen River Valley, farm fields, herds of cattle, the famous Patagonian...provincial route No. 7. Upon leaving the Neuquen River Valley, the weather changes from humid to extremely arid |  | | Journal (issue) | | localities: Spruce Ridge in King County, Washington (for quartz and pyrite) and the Rock Candy mine in British...tourmaline, danburite, forsterite, fluorapatite, topaz, quartz and zircon, plus rare species like hibonite, johachidolite...fine specimens of hambergite, pollucite, topaz, quartz, aquamarine beryl and lepidolite (Hla Kyi et al...gemmy red elbaite crystals clustered on matrix with quartz and feldspar have emerged from Pyinygi Taung, where...which he had heard on his travels concerning a “valley of serpents” which was littered with diamonds but |  | | Book (edition) | | very old origin, often without lrnown source. e.g. quartz or cinnabar. Current practice most often names...polished mineral surface, expressed in clase. 7 - quartz. 8 - topaz, 9 - corundum, 10 - dia- percentage...purine-porphyrine group). a nickel porphyrine. With quartz. rutile, piemontite, sursassite, ardennite, Triclinic...byssolite. Mono- coast of North America: Kobuk River Valley, Alaska, clinic, C2/m, a,b,c = 9.89, 18.20, 5.31... Actinolite - byssolite, 50 mm, Valle d'Aosta, Italy, G short-columnar crystals, usually in granular |  | | Book | | [the Santa Lucia and Sa Duchessa mines,] Sardinia [Italy] (by F. Olmi, C. Sabelli & G. Brizzi) 19:305-310...ALBERTINI, CLAUDIO Famous mineral localities: Baveno, Italy 14:157168 ALBITE Davis Hill near Bancroft, Ontario:...8:287-293 Minerals of the Alpine rodingites of Italy (by C. M. Gramaccioli) 10:85-89 Micromounting in...13:67-70 New data on the cause of smoky and amethystine color in quartz (by A. J. Cohen) 20:365-367 Amethyst...Arcu su Linnarbu, Capoterra, Cagliari, Sardinia [Italy] (by R. Vochten & G. Brizzi) 18:181-184 AREM, JOEL |  | | Book | | terms applied to jasper, agate, and other forms of quartz, as well as opal. Non-English terms commonly used...can be assigned. For example, granite must have quartz and potassic feldspar, syenite must have potassic...limestone must have calcite, sandstone must have quartz, and so on. Characterizing accessory minerals (and...hornblende syenite, bituminous limestone, siliceous (quartz) dolomite, glauconitic sandstone. Other minerals...mixed with ordinary sediments such as detrital quartz, calcite, and clay minerals. Rocks as well as minerals |  | | Journal (article/letter/editorial) | | water at high pressures, 1081. --liquid, in smoky quartz, 474. proportion of, in the upper regions of...wxjstals d,found in tlre codbeds of the Rhondda Valley, CYlamorganshire, 282. Linaloes, essence of, ’737...bromo-derivative of, 1302. Quartz, mealy, 474. separation of, from silicates, 894. smoky, liquid carbonic anhydride...the manufactnre of glass, 1245. -separation of quartz from, 894. Silicodecane, 154. -bromo-, 154. Silicofluorides...diuitro-compound, 170. --Reimer’s, 1299. Stilbite from the Miage Glacier, Mont Blanc, 290. Stomach, absorption in, ’748 |
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Miage Glacier, Courmayeur, Aosta Valley, Italy