 | | Journal (article/letter/editorial) | | by Lake Buchanan in 1938. The Terlingua mining district is noted for its rare mercury minerals. Mining...Temple, 6 miles W of Temple in abandoned limestone quarry; marcasite* (spear-point crystals; groups up to...cretions) (Schleh, 1967). Blanco County Coal Creek Serpentinite ( = Gould Davis Ranch), N W Austin County Raccoon...Minerals quarry), at Damon on Route 36, prominent hill, shallow piercement salt dome, open-pit quarry on N...an Indian stronghold. Sam Damon opened a small quarry in 1831, first oil well drilled in 1915. Sulfur |  | | Book | | [Vulcan, Roman god of fire], plutonite (Pluto and the lower world), and Pele’s hair (Hawaiian fire goddess)...wax] agate sed. Rock composed essentially of chalcedony (a microfibrous variety of quartz) and characterized...quartz and biotite altered to chlorite. [ Akenobe district, Tajima, Japan] (Kato in 1920) akerite ig. pluton...wardite, and other phosphates, in a matrix of chalcedony quartz. Also spelled amatrice [American + matrix]...found on beaches. amberine sed. Yellowish green chalcedony rock from Death Valley, California, [amber] (Ward |  | | Journal (article/letter/editorial) | | to 2 m thick, lie in fresh dunite and brown serpentinite. Most magnesite veins in dunite are unbranched...minerals in the veins include magnesite,dolomite, chalcedony,quartz and calcite, depositedin that order....associated mafic rocksand Rock Units in the Vavdos District slicesof Paleozoicgneisses within the Vardar zone...oceanbasinduring Late Cretaceoustime. brown serpentinite (Fig. 3). Lesser lithological The easternpart...-. , .•..•-' 'v.-.-; •, ,,','•'•", brown serpentinite. The {oilowing petrographic description of duniteis |  | Boschi, C., Dini, A., Dallai, L., Ruggieri, G., Gianelli, G. (2009) Enhanced CO2-mineral sequestration by cyclic hydraulic fracturing and Si-rich fluid infiltration into serpentinites at Malentrata (Tuscany, Italy) Chemical Geology, 265 (1) 209-226 doi:10.1016/j.chemgeo.2009.03.016 | Journal (article/letter/editorial) | | Malentrata (Tuscany, Italy) were derived from serpentinite silicification– carbonation of the Ligurian ophiolite...of the protolith. The pervasive alteration of serpentinite was accompanied by the formation of a network...brecciated magnesite vein infill, and iii) late quartz, chalcedony, and rare opal in the cavities. The mineral assemblage...discontinuities. This two-steps reaction (dissolution of serpentinite followed by carbonate precipitation outside...widespread silicate rocks (i.e., peridotite, serpentinite, basalt) that trap safely CO2 over geological |  | | Book | | partial ablation of the surface causes cooling of the lower layers, which thus acquire a more resistant structure...(diorites to quartz diorites) which predominate in the lower layer of the continental crust, produces melts that...in alluvial sediments. 23 Graphite forms at lower temperatures and pressures than diamond (see phase...Metasomatic pegmatite does not always develop; at lower temperatures minerals of hydrothermal associations...chrysoberyl. Leaching of SiOp from pegmatite in serpentinite gives rise to zeolites, carbonates and clay |  | | | | Dark amphibole gneiss (p. 280) slate (p. 284) serpentinite (p. 298) 13 Geological Regions of Canada...Township, Cochrane District, Ontario; Darwin Mine, McMurray Township, Algoma District, Ontario; nuggets...(48728): Dendritic, or Treetice. habit PD SE ES Yale District, British Columbia. Width of specimen: 5 cm Similar...Kamloops District, British Columbia; Burwash Creek, Yukon Territory; Coppercorp Mine, Algoma District, Ontario;...Mine, Beaverdell, Similkameen Division, Yale District, British Columbia. » Width of field of view: |  | | Catalog/List | | mass of black crystals, some Mount Malosa, Zomba District, free standing. ______ ______ Malawi Black crystal...Arizona Pure green cleavage AMAZONITE Landsverk quarry, Evje, Norway Ixl 50p lx2£l 11 felspar group____________...£3 7 Pure black mica plate new Analysis , Saga Quarry, Tvedalen near ANNITE Mica__________ paper available...Chrysotile, pale grey-green Ixl £1 County Bridge Quarry,Lizard Mg Fe SiO_______ massive. _________ .Cornwall...AsO/4 OH BEAVERITE Pb (Cu Fe Al) SOM BEEKITE Chalcedony BEIDELLITE clay mineral____ BEMENT1TE MnSiO__________ |  | | Journal (issue) | | rodingite within the contact alteration zone between serpentinite and gabbro/ diorite. Predominant colours of...city of Wroclaw in the province of Dolny Slask (Lower southwest Poland (Figure 1). From lage of Jordanow...nephrite jade production in the Jordanow Slaski district appears to have commenced in Neolithic times....of the regional geology of the [ordaruno Slaski district. J. Gemm., 2001, 27, 8, 461·470 western Europe...references to nephrite jade in the Jordanow Slaski district may be discerned in various 18th-century manuscripts |  | | Journal (article/letter/editorial) | | Tenderfoot mine (about 19131, Esterbrook copper district, Albany County. John Taylor collection. An ideal...Minerals was titled “The Copper Mountain Pegmatite District, Freniont County, Wyoming” and was in the JulylAugust...Wyoming is particularly known for its jade and chalcedony (cryptocrystalline quartz) varieties. Specific...described, although the general area will be. Because chalcedony (jaspers, agates, chens, chrysoprase, and flints)...small area, they are grouped under the district name. District names are from Hausel (1986). Localities |  | | Book | | found several places of pre-Inca mining in the district, the most intensive on Cerro Turquesa (Turquoise...ENE of Lima, in the western part of Morococha district. Manganocalcite formed thick, almost monomineralic...Carnelian andagote Camelian is a red-brown variety of chalcedony, which usually forms concretions in sedimentary...rocks. It has also been found together with blue chalcedony at Yanacodo (see below), where it rarely forms...Yanacodo, 2. 5 cm. Coll. and photo J Hyrsl. Chalcedony Carnelian stalactites from Yanacodo, 1O.5 cm |  | | Report (issue) | | Southern Cross Province, Yilgarn Craton Ravensthorpe district ................................................Korea, CIS, Turkey, Australia, Czech Republic, Austria, and Greece. Of these, the first three contributed...are more massive, of more uniform quality, and lower in trace elements like chromium and nickel than...Australia; (b) Ultramafic associations - e.g. Vermont district in USA, Eastern Goldfields in Western Australia;...commonly associated with dunite, peridotite and serpentinite and in these rocks talc mineralization generally |  | | Report (volume) | | Serpentinite and Rodingite in the Hunting Hill Quarry, Montgomery County, Maryland By DAVID M. LARRABEE...BULLETIN 1283 Description of rocks exposed in the quarry near the center of the Hunting Hill ultramafite...showing distribution of rocks in the Hunting Hill serpentinite pluton, Montgomery County, Md ____ In pocket...pocket 2. Geologic map of the Hunting Hill serpentinite quarry __ In pocket 1. Index map showing location...location of the Hunting Hill serpentinite pluton, Montgomery County, Md______________ 3 2. Photograph of the |  | | Report (edition) | | microscope by D.M. Lapham of a thin slice of serpentinite from Lancaster County showing olivine (blue-green...County, the Stillwell quarry in Lancaster County, and the Medusa Cement Company quarry in York County, are...Zircon Crystal 50 Diagramatic Sketch of Brinton Quarry Pegmatite 53 Geologic Cross-Section of West ...84 of Deweylite after Dolomite, Ceclar Hill Quarry 89 _ Limonite Pseudomorphs from Chestnut Hill...permission from the owners of the land, or from the quarry and mine operators, before entering to collect |  | | Report (edition) | | Crystal . . . . . . .. Diagra1natic Sketch of Brinton Quarry Pegmatite Graphic Granite Geologic Cross-Section...Pseudomorphs of Deweylite after Aragonite. Cedar Hill Quarry . . . . . . . Calcite Crystal Forms "Picrolite"...permission from the owners of the land, or from the quarry and mine operators, before entering to collect...have been taken from topographic quadrangles. A quarry or mine symbol designates the exact mineral location........,, ....... ...... " Open pit, mine, or quarry. Shaft-Tunnel entrance ----------~ ..... ' l' |  | | Book | | Garnets of East Africa 73 Rh.odolite of the Lindi District, Tanzania 76 Tsavorite Garnets 76 The Pyrope-...Tanzania 96 Red Dravite Tourmaline from the Narok District, Kenya 99 Uvite-Dravite Chrome Tourmaline 99 ...Province, Tanzania. 34 Figure 3. 7. Geologic map of serpentinite body southwest of the Gerevi Hills, near Umba...phlogopite mica found in a ruby from Mangari, Taita District, Kenya. 47 Figure 4.1. Typical Manyara (Maji Mota)...Tanzania. 121 Figure 9 .6. Faceted peridot from a serpentinite located at Kingiti, Tanzania. 125 Figure 9.7 |  | | Book | | one that will again defined as groups for the lower sec- 2< make a positive identffica- tion of the...characteristic—also weight of a specific mate- The lower section of the margin bar is rial compared with...crystals, and weathered surfaces can give a false lower hardness. Metal holders in which mineral chips...Tarnish, discolorations, and weathering tion at the lower edge of the crystal can be observed with the naked...carnallite, gypsum, halite, calcite. Found in: Lower Saxony/Germany; Czechoslovakia; Yugoslavia; Surrey/England; | | | Book | | specific gravity are again defined as groups for the lower section of the multicolored margin bar. As many...minerals as possible are included in each group. The lower section of the margin bar is fitted with a scale...crystals, and weathered surfaces can give a false lower hardness. After the test scratch, a po}Vder-like...zircon and sphene, where double refraction at the lower edge of the crystal can be observed with the naked...carnallite, gypsum, halite, calcite. Found in : Lower Saxony/Germany; Czechoslovakia; Yugoslavia; Surrey/England; |  | | Journal (issue) | | Symposium v.28/#1 Illinois-Kentucky Fluorite District! 80 p., full color $15 v.28/#4 Mines & Minerals...$15 v.29/#1 Mexico-I Issue All about the Boléo District, Baja Calif. $10 v.29/#4 The Sweet Home Mine...shown, to the editor. There is a modest annual fee (lower than our regular advertising rates). The Gillespie...and greatest of all Brazilian localities is the district of Barra de Salinas, encompassing a gem-bearing...(which may be a record for a single locality or district). The identifications were performed on gem rough |  | | Catalog/List | | two earlier catalogues, but now offered at even lower prices. Additionally, I have included some specimens...5", £5.00 A/l 3. ALMANDINE. Zillerthal, Tyrol, Austria. A silvery-green, lustrous surfaced, Mica-Schist...£8.75 A/l 5. ALMANDINE (Garnet). Zillerthal, Austria. Lustrous brownish-red, sharp translucent 1.75"...>ALMANDINE/CHLORITIC-SCHIST. Zillerthal, Salzburg, Austria. Fine, large, showy cabinet Schistose matrix, profusely...golden-yellow nodule, A/20. ANALCIME. Enderby Quarry. Leicestershire. This specimen is more interesting | | | Book | | specific gravity are again defined as groups for the lower section of the multicolored margin bar. As man y...minerals as possible are included in each group. The lower section of the margin bar is fitted with a scale...crystals, and weathered surfaces can give a false lower hardness. After the test scratch, a powder-like...zircon and sphene, where double refraction at the lower edge of the crystal can be observed with the naked...carnallite, gypsum, halite, calcite. Found in: Lower Saxony/Germany; Czechoslovakia; Yugoslavia ; Surrey/England; |  | Palomares, R. M., Hernandez, R. L., Menor, L. O., Garcia, R. P., Perez, S. M., Linares, F. G. (2013) HYDROTHERMAL PALLADIUM ENRICHMENT IN PODIFORM CHROMITITES OF CALZADILLA DE LOS BARROS (SW IBERIAN PENINSULA) The Canadian Mineralogist, 51 (3) 387-404 doi:10.3749/canmin.51.3.387 | Journal (article/letter/editorial) | | formation of chalcopyrite, millerite, magnetite, and chalcedony. Olivine in harzburgites and dunites is mainly...occurring along a NW– SE shear zone in the SW of the serpentinite bodies (Fig. 1c). The serpentinized peridotite...(b) Location of the Calzadilla de los Barros serpentinite massifs (CZ) and significant mineral deposits...geological map of the Calzadilla de los Barros serpentinite massifs. Sample location for chromitites (CUCO...The matrix of CUCO and CAB chromitites exhibits chalcedony-magnetite associations (Fig. 2b) and chalcopyrite |  | | Book | | hardness. Each mineral will scratch those in a lower division on the scale and can be scratched by those...muscovite (No. 13). Rare. Specimen from the Tyrol (Austria). 10 Biotite is the most common mica, named after...tablets. Occurrence: Eifel (Germany), Carinthia (Austria), Norway (No. 10). 11 Zinnwaldite (lithium mica)...crystals, usually in irregular plates. Occurrence: Austria, Norway, USSR, Australia, India. Fig. 13 from the...characteristic bronzy sheen. Fig. 17 from Styria (Austria). Hypersthene rarely forms well-shaped crystals |  | | Book (edition) | | pyrite crystal makes it possible to assign it to a lower symmetry class than that of the geometric cube,...some of the contents of a unit cell must have a lower symmetry than that of the particular Bravais lattice...how, in the passage from the upper form to the lower, the silicon atoms are more symmetrically spaced...solutions at high We temperatures, whereas at a lower temperature they develop exsolution, i.e., the unmixing...atmospheres are octahedral, and those obtained at lower pressures are cubic. , Hopper faces in a quartz |  | | Book | | epidote 87, 87, 89 epistilbite 124 arsenic 4 chalcedony 31 chalcocite 8, 8 erythrite 70, 73 argentojarosite...found at Butte, Montana, and the Copper River district of Alaska. A much rarer mineral is covellite,... Wales r, at Pragratten in the Tyrol and (Austria), Bristol, C Redruth cticut. in Cornwali...Saxony, Cavnic in Romania, Schwaz in the Tyrol (Austria), and Cornwall, England. In the United States good...them the celebrated Bleiberg mines in Carinthia (Austria), Freiberg in Saxony (Germany), Alson Moor in Cumberland |  | | Report (issue) | | measures about 2 1/2 inches across and includes some chalcedony nodules. Several large nuggets have been found...the author’s 1981 discovery of an entire gold district west of Casper in the Ra�lesnake Hills area (Hausel...companies and private consultants explored the district and located several other gold anomalies that...Generalized geologic map of the Rattlesnake Hills gold district (from Hausel, 1996b). 35 Tl Tph Asb Tph Tst...Miles STATE LINE Madre COPPER Mts. RIDGE Green BIG HORN 108 Greybull Bighorn CLOUDS HOME GOOSE PEAK PORPHYRY |
|
