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Hydrothermal replacement of Aragonite by Calcite: interplay between replacement, fracturing and growth 29 May 2013 | 09:25 pm
The hydrothermal transformation of single aragonite crystals into polycrystalline calcite has been studied under hydrothermal conditions. The transformation involves a fluid-mediated replacement react...
Vibrational spectra of BaMn(CO3)2 and a re-analysis of the Raman spectrum of BaMg(CO3)2 29 May 2013 | 09:25 pm
Raman and mid-infrared (MIR) spectra have been measured on BaMn(CO3)2, an ordered double carbonate, synthesised at low and at high pressures and temperatures (1 atm, 21 °C and 15 kbar, 510 ± 10 °C, re...
Origin of twist in 'gwindel' quartz crystals from the Alps: a transmission electron microscopy study 29 May 2013 | 09:25 pm
Two twisted quartz crystals (gwindels) from the Alps were studied by transmission electron microscopy and large-angle convergent-beam electron diffraction (LACBED) to elucidate the twist mechanism. We...
Reactions involving famatinite and Fe-Zn tetrahedrite: thermochemical evaluation of phase relations in the Cu-Fe-Sb-S and Cu-Zn-Sb-S end-member system... 29 May 2013 | 09:25 pm
Monomineralic Fe-Zn tetrahedrite-tennantite (fahlore) veins from the historic silver mines of Brixlegg in the Inn Valley (North Tyrol, Austria) show replacement textures containing a newly formed mine...
X-ray powder diffraction clustering and quantitative phase analysis on historic mortars 29 May 2013 | 09:25 pm
This paper describes the application of cluster analysis to X-ray powder diffraction patterns (XRPD) to define homogeneous groups of mortar-based materials according to their mineralogical composition...
Ferrisepiolite: a new mineral from Saishitang copper skarn deposit in Xinghai County, Qinghai Province, China 29 May 2013 | 09:25 pm
Ferrisepiolite was discovered in the Saishitang copper skarn deposit in Xinghai County, Qinghai Province, China, as late-stage veinlets in copper-sulphide ores hosted in layered hedenbergite-andradite...
Bastnasite-(Nd), a new Nd-dominant member of the bastnasite group from the Stetind pegmatite, Tysfjord, Nordland, Norway 29 May 2013 | 09:25 pm
Bastnäsite-(Nd), ideally (Nd,La,Ce)(CO3)F, occurs in the Stetind pegmatite, Tysfjord, Nordland, Norway, in association with bastnäsite-(Ce), calcioancylite-(Nd) and/or kozoite-(Nd), stetindite, vyunts...
Vesuvianite in high-pressure-metamorphosed oceanic lithosphere (Raspas Complex, Ecuador) and its role for transport of water and trace elements in sub... 29 May 2013 | 09:25 pm
Metamorphosed, vesuvianite-bearing dykes occur in serpentinised peridotites of the Raspas Complex (Ecuador), which represents a piece of oceanic lithosphere that has experienced high-pressure, subduct...
Eltyubyuite, Ca12Fe3+10Si4O32Cl6 - the Fe3+ analogue of wadalite: a new mineral from the Northern Caucasus, Kabardino-Balkaria, Russia 29 May 2013 | 09:25 pm
Eltyubyuite (IMA2011-022), ideally Ca12Fe3+10Si4O32Cl6i.e. the Fe3+ analogue of wadalite, Ca12Al10Si4O32Cl6, was discovered in altered silicate-carbonate xenoliths in the diatreme facies of ignimbrite...
Dzhuluite, Ca3SbSnFe3+3O12, a new bitikleite-group garnet from the Upper Chegem Caldera, Northern Caucasus, Kabardino-Balkaria, Russia 29 May 2013 | 09:25 pm
Dzhuluite, Ca3SbSnFe3+3O12 (Iad, a = 12.536(3) Å, V = 1970.05(9) Å 3, Z = 8), a new antimony garnet of the bitikleite-group, was discovered in a kumtyubeite zone in close proximity to the contact with...
