 | | Book | | cristobalite, citrine, amethyst, and tridymite, as \Veil as opal, are poly.morphs of silica. Most minerals occur...common opal is caused by the reflection of light. Opalization A speckled play or color of opal is observed... Found in: California, Argentina, Turkey, Catalonia/Spain. Similar to: borax, sassoline. Sylvite KCI...Magdeburg, Halle, Erfurt/Germany; Galicia and Catalonia/Spain: Urals/USSR; Iran; Libya; Saskatchewan/Canada;...Nevada/USA; Venezuela; Gobi desert/ Mongolia; Madrid/Spain. Halotrichite Q) Colorado/US; FeAl[S04)4. 22 H2o | | | Book | | cristobalite, citrine, amethyst, and tridymite, as \vell as opal, are poly.morphs of silica. Most minerals occur...common opal is caused by the reflection of light. Opalization A speckled play of color of opal is observed...Found in: California , Argentina, Turkey, Catalonia/Spain. Similar to: borax, sassoline. Sylvite KCI...Magdeburg, Halle, ErfurtiGermany; Galicia and Catalonia/Spain; Urals/USSR; Iran; Libya; Saskatchewan/Canada;...Nevada/USA; Venez uela; Gobi desert/ Mongolia; Madrid/Spain. Halotrichite Q) Colorado/US; FeAl [SO 4 ] 4 | | | Book | | cristobalite, citrine, amethyst, and tridymite, as well as opal, are polymorphs of silica. Most minerals occur...blue or pearly Pleochroism appearance of common opal is caused by the reflection of light. Some transparent...differently Opalization A speckled play of color of opal is observed and changes according depending on...ulexite. Found in: California, Argentina, Turkey, Catalonia/Spam. Similar to: borax, sassoline. Specific...Magdeburg, Halle, Erfurt/Germany; Galicia and Cataloma/Spain; Urals/USSR; Iran; 34 Libya; Saskatchewan/Canada; |  | | Book | | Lamentos District.... Placer de Guadalupe Puerto del Aire District Chihuahua ...........................Eulalia District....... El Potosi Mine............. San Antonio Mine....... Cusihuiriachic District..... Rare Minerals ........................ Hidalgo del Parral District ....... Talamantes District ................................... Minerals of Ojuela Mine .... . Velardena District.........................Guanajuato District ..................... El Sanlin Mine......................... San Miguel de Allende | | | Book | | cristobahce, Cltrme amethyst, and tndym1ce, as well as opal, are polymorphs of silica. Most minerals occur in...common opal 1s caused by rhe reflection of I1ght Opalizatton A speckled play of color of opal 1s observed... Found in: California, Argentina, Turkey, Catalonia/Spain. Similar to : borax, sassoline. ¡⢠Specific...ofMagdeburg, Halle, Erfurt/Germany; Galicia and Catalonia/Spain; Urals/USSR; Iran, Libya; Saskatchewan/Canada:...Nevada/USA; Venezuela; Gobi desert/ Mongolia; Madrid/Spain. Halotrichite Q) Colorado/US! FeAl[SOâ˘l⢠-22 |  | Geyne, A. R., Fries, Carl, Segerstrom, Kenneth, Black, R. F., Wilson, I. F., Johnson, Paul Willard (1970) The Pachuca-Real Del Monte Mining District. Rocks & Minerals, 45 (1) 3-7 doi:10.1080/00357529.1970.11763776 | Journal (article/letter/editorial) | | THE PACHUCA-REAL DEL MONTE MININC DISTRICT By A. R. GEYNE, CARL FRIES, JR., KENNETH SEGERSTROM, R. F...ŠCOPYRIGHT 1970 by Paul Willard Johnson The Pachuca-Real del Monte rninmg district has been one of the principal...come right down into the town. The Pachuca-Real del Monte district was discovered probably in 1522, shortly...primitive furnaces by the use of charcoal. The Real del Monte mine was acquired by Romero de Terreros in 1739...and gifts to the Kine of Spain, Terreros was made Co-ide de Santa Maria Regia. Part of his fortune was |  | Saunders, James A., Mathur, Ryan, Kamenov, George D., Shimizu, Toru, Brueseke, Matthew E. (2016) New isotopic evidence bearing on bonanza (Au-Ag) epithermal ore-forming processes. Mineralium Deposita, 51 (1) 1-11 doi:10.1007/s00126-015-0623-y | Journal (article/letter/editorial) | | (Shimizu et al. 1998; Saunders et al. 2008). Quartz, opal, chalcedony, calcite, quartz-replacing calcite,...qtz quartz. b Photograph of multiple electrum and opal bands from the Sleeper deposit, Nevada (field of...reflected light) of a fractal electrum dendrite in opal and quartz (gray) from the Sleeper deposit (from...vein (sample from the 4040 Bench in the Sleeper mine) The high-grade ores and banded nature of the ores...Similarly, physically separated gangue minerals (quartz, opal, adularia, or quartz + adularia) also contain enough |  | | Book | | spinel, 232 ; ; tourmaline, 236 turquoise, 238 opal, 240 ; ; ; quartz, 240 ; ; ; 229 beryl... which light in (e.g., banded a changeable opal, Chatoyant stones, when cut is out bands of...corundum (sapphire diamond, 3*52 275 emerald, 27 opal, 2*2. Thus it will be seen that the ; the felspars...(hexagonal). Chalcedony dioxide of silicon, SiO 2 Opal hydrated dioxide of silicon, SiO 2 + wH 2 O. . ...thinnest wire. it is Insoluble in acids, except aqua regia, in which It is also easily dissolved to platinum |  | | Journal (article/letter/editorial) | | Chemistry. SPEZIA (Juhrb. f. Mh.,1899, i, Quartz and Opal. By GIORGIO Ref., 92 ;from Atti Accad. Sci.Torino...the dissolved silica is deposited i n the form of opal, but when alkali is present, it is deposited as...cut i n various directions from quartz crystals. Opal, when treated i n the same manner with water and...splendid indigo-blue masses from the East Greyrock mine at Butte, Montana, gave results agreeing closely...i, 76-77).-1n the old workings of the Schmalgraf mine a t Altenberg near Aachen, is a fibrous efflorescence |  | | Book | | omissions and The Work as a of Reference for the Mine Agent, and the Working Miner faults are his excellencies...at the same time given off from the acid. Aqua Regia, concentrated and warmed, in cases where nitric...upon by HC1 or 3 , are readily decomposed by Aqua Regia. Nitric Acid HNO E. Special solvents. a. Sulphuric...for some few b. Ammonia. c. Caustic Potash. Opal and some other minerals are partially completely...1854, from Cervantes, in CERVANTITE. 'Galicia, Spain. CHALYBITE. (Gr. Chalybs, iron.) Named by Glocker |  | | Journal (article/letter/editorial) | | Pt-Ir-K chlorocompounds, and Pt-Ir-Ru-K-Clcontaining opal. The latter two are considered as artifacts generated...then useless residues left behind after the aqua regia extraction of platinum were recognized by several...ammoniochlorides of Ir and Pt, formed during the aqua regia treatment of the platinum ores, and the subsequent...starting materials were two bulk samples of aqua regia leach residues of the Nishnij Tagil platinum ores...several stages (and chemicals) to which the aqua regia residues were submitted, before being circulated |  | | Journal (issue) | | new species which he ha discovered at the Tip Top mine was named robertsite in his honoi Roberts was founder...cm, collected in 1867 at Grube Louise (the Louise mine), Biirdenbach, Westerwald, West Ger many. Photo...6-12 cm, Adamite with Hemimorphite from the Ojuela mine, pale green and purple Naica fluorites in small...time, Natale Calanchi, a ook entitled I Minerali del Marmo di Carrara (âThe Minerals of le Marble of Carraraâ)...historically important works are as follows: 267 1597 âDel Riccio mentions quartz crystals. 1820âRepetti describes |  | | Journal (article/letter/editorial) | | 3 8, (CALVERT, 1966) or 12 8, (KAMATANI, 1971). Opal phytoliths give bands at 4.25 and 10 A (JONES AND...Bight of the North Sea and consisted of Biddulphia regia Ostenfeld with 5-10x B. sinensis Greville. The other...Schriider (in about equal amounts) with some 10% of B. regia. These samples will be referred to as âBiddulphiaâ...against oxidation, a possibility already suggested for opal phytoliths by JONES and BEAVERS (1963). The Al,O...shows that the siliceous envelope of a Biddulphia regia cell has a âloculateâ structure: two layers (the |  | | Report (issue) | | Paraguay Peru petroleum plural Puerto Rico seismology Spain statistics Dominican Republic surveying southwest...A number of local measures of area are used in Spain and Latin America: almud (Venezuela) area (Venezuela)...estadal (Nicaragua) esladal (Spain) fanega (Mexico) fanegada (Peru) fanegada (Spain) fanegada (Venezuela) labor...(Ecuador) suerte (Nicaragua) suerte (Uruguay) tahulla (Spain) tarea (Cuba) tarea (El Salvador) tarea (Santo Domingo)...Cuzco) topo (Peru, Puna) yugada (Peru) yugada (Spain) 1 hectares 0.699 hectares (8 so/ores) 0.70258 |  | | Book (volume) | | fupplied that part without which, of Chemiftry, Mine- ralogy can never be fuccefsfully ftudied., The...from Brazil 78 â ââ ââ Zeylon 78 Tyrol 80 Spain So Green Short from - Dauphinee - 81 ⢠5* ...- J . 5. Ctf/âi Stone Eye - 34 37 138 Opal Opalus - *39 Var. â â 1 I2 5 - , * 124...Common Opal k I 3. 0 cuius 4. 4I Mundif Hy- drophan B 142 Haib Opal - 144 Opal ⢠145...occafioned by /craping the Surfaces of Colour Mine- rals. Hardness. According 1. to the different |  | | Book (edition) | | any bank. in the sure a and and farm from mine more List of Illustrations. PROSPECTING THE...mines. Mineral New and con- and in lead and mine, Nicholsonâs Brunswick, Point, Wis.; Calaveras...Ingo County, Cal. An- Owen Coun- Brownâs Creek Mine-a-Barton, Mo.; N. Paris, Mercer and and O.;...Shelburne, Creek Prince Dubuque, Ia.; Warsaw, lead-mine, and Vein, Polk Mich.; Rosiclare and Ga- BOG...lead per cent. Washington Mine, Mine-la-Motte UNDERGROUND 34 and Mine-a-Burton, Counties, Ill |  | | Catalog/List | | mineral, "At were of large, prisms, of this mine have been obtained, more Note. - Galena offer...in the specimens Dundasite, bunches samples Mine, of occurs lode. beautiful white large more...originally Cornish mining ceeding by colour, Mine fractures of great the mineral often Mount ...extremely some rarely Anglesite. Embolite, back Mine. with minute of small of capping gossan the...These appearance when Bunsen a cone and regia part small amount a the on aqua considerable |  | | Book (edition) | | the owner from ruinous bargains, and may reveal a mine of mineral wealth, more sure and more profitable...chiefly in lead and copper mines. Perkiomen lead mine, CornÂŹ wall, Phoenixville and Nicholsonâs Gap,...Scales Mound, Ill ; Prince Vein, Lake Superior; Mine-a-Barton, Mo.; near Fort Wallace, N. M.; Ingo County...Shannonville and Friedensville, Pa.; Austinâs lead-mine, Va.; Haysboroâ, Brownâs Creek and Polk Counties...Washington Mine, Valleâs Diggings, Mine-la-Motte D UNDERGROUND TREASURES. 34 and Mine-a-Burton, Mo |  | | Journal (article/letter/editorial) | | subsequent hydrochloric acid digestion or by aqua regia extraction. Analytical errors are less than 10%...around 4 A, which is typical for amorphous silica or opal-A [20]. Two samples were collected from inner and...r p h of this sample (1895-12) is cristobalite (opal-CT) rather t h a n a m o r p h o u s . Barite and...fusion and hydrochloric acid digestion. b Aqua regia extraction. c NAA analysis by M.A.Hannington (pers...Silica chimney (Sumisu Rift), \ J / \ \ \ / ~ Opal-barite /l~(Green seamount) 1.0. 0.5 i! /ili i |  | Villanueva-Estrada, Ruth Esther, Prol-Ledesma, Rosa MarĂa, RodrĂguez-DĂaz, Augusto A., Canet, Carles, Armienta, MarĂa Aurora (2013) Arsenic in hot springs of BahĂa ConcepciĂłn, Baja California Peninsula, MĂŠxico. Chemical Geology, 348. 27-36 doi:10.1016/j.chemgeo.2012.09.008 | Journal (article/letter/editorial) | | largest and economically most important is El GavilĂĄn mine (Fig. 1). Around the study area, several hydrothermal...romanechite) and sandy detrital aggregates cemented by opal-A, barite and calcite occur. In the submarine venting...main components (Fe-oxyhydroxide, Mn-oxides and opal). The mineral assemblages and textural features...0.2 M 4 Residual 20 mL Aqua regia HCl : HNO3 (3:1) 20 mL Aqua regia HCl: HNO3 (3:1) pH = 7.2 16 h...volcanic cobbles and boulders. The crust is composed of opal, calcite and barite forming radial aggregates of |  | | Journal (issue) | | ..157 by C. Albertini Sellaite from the Brumado mine ..................................................expanding vista. On arrival at the American Nettie mine the superintendent, Mr. Kunz, permitted us to visit...into the valley, whence a road led to the Bachelor mine in Red Canon. Two members of the party, who were...porter of the hills.â When we reached the Bachelor mine the noon-day meal was ready, so we accepted the...of Mr. George Hurlbut, the principal owner of the mine, to take luncheon before going under ground. It |  | | Book | | chalcedony or alternating bands of chalcedony and opal laid parallel ture, to the walls of the host rock... trasting parallel colorbands of chalcedony, of opal, or of both, but the bands are flat. Agate shells...quartz-family minerals is opal, a structureless form of silica containing some water. Precious opal, the best-known...irridescent color. 12] The eflFect produced by opal is similar to that produced by a butterfly's wing...Unfortunately, precious opal has not been found in the San Francisco Bay region. Common opal, which does not |  | | Book | | reserves of gold en trapped In the minerals of ancient mine workings and unmlned rock are strong Indications...from Spain, nickel from Canada and New Caledonia, and platinum from South Africa. A large new mine In Montana...to 2.0 Come Hite Ulexite Borax-Kernite Epsomite Opal SyKrite 2.0 to 3.0 Chrysocolla Bauxite Niter Sulphur...Inexpensive and easily operated Instruments you can deter mine the radioactivity and in turn Identify those minerals...Bluish Green Uranium Salts Autunite Lepidolite Opal Willemite Gypsum Cerussite Strontianite Blue Green |  | | Book (volume) | | Peculiar Property of the Hydrophanous Stone page 57 Opal and Fhe ther 4. Of Of Chalcedony â â compared...much refembled a certain variety of the Eibenflock opal, which, upon trial, was tions, fary fo that ftones...fhewn its exiftence in certain of the chalcedony and opal tribe, let us conlider thefe flones a little more...other fpecies. § II. T/:Je Opal and Chalcedony compared together. The opal and chalcedony agree v/ith...STONE. lucid than the latter ^ belides, the opal, viewed with refradted and refledted rays, exhibits |  | | Book | | pleafure of making fome of the following analyfes. MINEÂŽ ( s ) ~ 'l MINERALOGICAL OBSERVATIONS. TIN...glofs and (harpnefs of anÂŹ gles are found at Bun-mine, in St. Auftle, in much decayed granite or growan...Sage this Wood-tin is mentioned under the name of Mine d'etain en jlaladlite. Mr. Rome de Rifle defcribes...weight, to enable us to C a diftinguifii 20 MINE It A L OGICAl diftinguilh them: is it like wife...PolÂŹ dice, Hallamanning, Dol-coth. From the latter mine, which is it>o yards deep, and yet elevated 60 |
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