 | | Journal (article/letter/editorial) | | transformation of taranakite and for the dehydration of variscite into berlinite. Berlinite was successfully synthesized...accelerating voltage and 5 nA beam current. Synthetic variscite, AlPO4·2H2O, served as a standard. The average... Operating conditions were 20 kV, 7.5 nA and variscite was used as an internal standard. The average...aluminum orthophosphate was formed. However, variscite, AlPO4·2H2O, is the stable form of aluminum phosphate...and reagent-grade hydrated aluminum phosphate (variscite) with a purity greater than 97% were used to synthesize |  | | Journal (article/letter/editorial) | | Charles Davis pegmatites (possibly scorzalite) at North Groton, Grafton County, New Hampshire. Lazulite...include trolleite, goyazite, variscite, and apatite. Farther south in North Carolina, dark blue, well-formed...occurs with topaz in a sillimanite quartzite just north of the South Carolina state line on what is known...Carolina mine deposit at Staley, Randolph County, North Carolina, has been the source of unusual lazulite...associated with late quartz veins. In Moore County, North Carolina, several pyrophyllite deposits near Glendon |  | | Journal (article/letter/editorial) | | (2011) 416–426 www.elsevier.com/locate/gca Does variscite control phosphate availability in acidic natural...natural waters? An experimental study of variscite dissolution rates Teresa Roncal-Herrero, Eric H. Oelkers...dissolution rates of natural, well crystallized variscite (AlPO42H2O) were determined from the evolution...acidic, Al and P-free solution with variscite. Hence, variscite can buffer aqueous phosphate concentrations...concentrations of phosphate in natural waters. Variscite (AlPO42H2O) has been postulated to control phosphate |  | Hensel, Nicole, Franz, Gerhard, Riedl, Martin, Gottschalk, Matthias, Wunder, Bernd, Galbert, Francois, Nissen, Jörg (2007) Polymorphism and solid solution in the system SiO2-AlPO4(-H2O): a review and new synthesis experiments up to 3.5 GPa and 1573 K. Neues Jahrbuch für Mineralogie - Abhandlungen, 184 (2) 131-149 doi:10.1127/0077-7757/2007/0087 | Journal (article/letter/editorial) | | the system AlPO4(-H2O) except for the reaction variscite (Var) = berlinite (Ber) + H2O (data from Drüppel...pressure region. However, in the system AlPO4-H2O two hydrated crystalline phases are known, variscite Al[PO4]·2H2O...this is a prime difference. In this system (meta)variscite has an Al:P ratio of 1, but there are also other...determined (Fig. 3). The dehydration reaction variscite = berlinite + 2 H2O was calculated from thermodynamic...Feng & Rockett (1979), but no variscite, so it can be assumed that variscite has an upper thermal stability |  | Dill, H. G., Melcher, F., Gerdes, A., Weber, B. (2008) THE ORIGIN AND ZONING OF HYPOGENE AND SUPERGENE Fe-Mn-Mg-Sc-U-REE PHOSPHATE MINERALIZATION FROM THE NEWLY DISCOVERED TRUTZHOFMUHLE APLITE, HAGENDORF PEGMATITE PROVINCE, GERMANY. The Canadian Mineralogist, 46 (5) 1131-1157 doi:10.3749/canmin.46.5.1131 | Journal (article/letter/editorial) | | exposed by denudation. The pegmatites of Hagendorf North and South and the quartz pegmatite near Pleystein...the neighboring pegmatites of Hagendorf South and North, the THM aplite is poor in Li and does not contain...also indicated by the presence of kaolinite. Variscite or crandallite-group minerals do not exist in...preponderance of Fe and Al and would have led to variscite or Fe3+ phosphate according to the reaction below:...below: Al(OH)3 + HPO4 2– + 2H+ ! variscite +H2O Sc(OH)3 + HPO4 2– + 2H+ ! kolbeckite +H2O During an advanced |  | | Journal (article/letter/editorial) | | high-temperature assemblage. More hydrated phases like variscite, AIPO 4 - 2H20, vantasselite, Ala(PO4)3(OH) 3...minerals in altered andesite from Mount Perry, Queensland, Australia. Can Mineral 28:125 131 Dunn P J...three new species from the Palermo No. 1 pegmatite, North Groton, New Hampshire. Am Mineral 60:957-964 Morteani |  | | Journal (issue) | | Vorospatak. 15 small xld. aare1ates & wires In Riker mount • • • • 25.00 GOLD, Bullfrog Mine, Nevada. Finely... • • •.• 2.50 METEORITES: Siderite, Henbury, Australia. Complete. 187 grms.•..•.• 5.00 Siderlte, Magura...Connecticut-Massachusetts line ( Conn.15) and go north into Massachusetts for 1.5 miles where a dirt road...County line on the south to Dutchess County on the north for a distance of 13.9 miles and averages about...TITANITE LOCALITY At a distance of 1. S miles north of the 7-Mile Road (N.Y.State H wy. 301under which |  | | Journal (article/letter/editorial) | | and numerous smaller bodies occur throughout this region. Most occur in the Ordovician Chopawamsic or Milton...volcanic-plutonic belt shown in Figure 1, which extends into North Carolina. Occurrences in southern Prince Edward...near the boundary between the Central Piedmont region and the 0361-0128/98/000/000-00 $6.00 Carolina...probable that the poorly studied Central Piedmont region of Figure 1 is not part of this terrane (e.g.,...most extensive unit of kyanite quartzite in this region. Willis Mountain forms a rugged topographic high |  | | Book | | Located on an island about 300 km (185 miles) north of Yellowknife, the Acasta River deposit is believed...hundred kilometers. Most of them orbit the Sun in a region called the asteroid belt, which is between the...Corundum encke Madagascar e(2x23x3em Quartz, Mount Ida, Arkansas, USA ° 14x 15 x 10 cm Corundum, Mozambique...feather. Cerussite, Broken Hill, New South Wales, Australia * 7 x 6 x 6 cm Epidote, Brazil * 7 x 75 x Reniform...Russia; Mysore, India. Australia: Kalgoorlie, Coolgardie and Norseman, West Australia. Name The etymology |  | Dyar, M. D., Jawin, E. R., Breves, E., Marchand, G., Nelms, M., Lane, M. D., Mertzman, S. A., Bish, D. L., Bishop, J. L. (2014) Mössbauer parameters of iron in phosphate minerals: Implications for interpretation of martian data. American Mineralogist, 99 (5) 914-942 doi:10.2138/am.2014.4701 | Journal (article/letter/editorial) | | and Janice L. Bishop5 Department of Astronomy, Mount Holyoke College, South Hadley, Massachusetts 01075...Rapid Creek, Yukon, Canada Hamilton, Victoria, Australia Kirunavaara, Kiruna, Lapland, Sweden Boa Vista...miles south of Blinman, Flinders Range, South Australia Locality unknown (collection of Pierre Hanin (...Hampshire Blaton Hainaut, Belgium Palermo Mine, North Groton, New Hampshire Monmouth County, New Jersey...dimorph strengite have similar structures to variscite [AlPO4(H2O)2] and its dimorph metavariscite. The |  | | Report (Issue volume) | | + 4, Mineral Fe # — of Australia and™ Papua New Guinea ...O02unse Geology of the Mineral Deposits of Australia and Papua New Guinea The COVER PHOTOGRAPH shows...Economic Geology of Australia Guinea — 1. Metals 6.* Economic Geology of Australia Guinea — 2. Coal 7...Economic Geology of Australia Guinea — 3. Petroleum 8.* Economic Geology of Australia Guinea — 4. Industrial...New Zealand Geology of the Mineral Deposits of Australia and 1982 Eds D.A. Berkman and W. Ryall Ed. D |
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