	*Frondel, Clifford (1968) Crystal chemistry of scandium as a trace element in minerals. Zeitschrift für Kristallographie - Crystalline Materials, 127 (1) 121-138 doi:10.1524/zkri.1968.127.1-4.121*	Journal (article/letter/editorial)
	first of the four d-type transition elements in Group Ilia of the periodic table, is sometimes classed...Sc3 and the large lanthanide ions of the La—Nd group. The crystallochemical similarities between Sc3...shared by the small lanthanides of the Er3—Yb3 group. This results from the progressive decrease in the...afforded rather smaller Sc—0 distances. The ScC>6 group is deformed, with Se—02 2.12Â, Sc-03 2.20, Sc—03...values reported for Sc3 in Table 2. isostructural group of particular metal-oxygen a where second cation
	Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, Oberthür, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalum–(niobium–tin) mineralisation in African pegmatites and rare metal granites: Constraints from Ta–Nb oxide mineralogy, geochemistry and U–Pb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003	Journal (article/letter/editorial)
	granitic rare-element IP pegmatites. Columbite-group minerals (CGM) account for the majority of the current...rare-element pegmatites (Černý et al., 2005). Columbite-group minerals (columbite-tantalite solid solution series;...members of the orthorhombic columbite-tantalite group (CGM) with the general formula AB2O6 (A = Fe2+,...prefixes and a root name (identical to the name of the group). The first prefix indicates the dominant anion/cation...important minerals are members of the microlite group [(Ca,Na)2-xTa2O6(OH,F,H2O)1-y]. They are either
	*Frye, Keith (1981) The Encyclopedia of Mineralogy. Hutchinson Ross Publishing Co., Stroudsburg, PA.*	Book
	are defined by chemical composition, structural group, and crystal system, with one or two references...Si04) and fayalite (Fe 2 Si0 4 ) (see Olivine Group), group names, such as mica for all the minerals with...pyrite) and also to a group of minerals having the same structure pyrite group). kind of mineralogic...sense that does not refer to a mineral species or group proper, no special designating valid mineral species...2 4 ), a mineral species assigned to the spinel group because of its spinel structure; quartz syenite
	*Szakáll, Sándor - Ed.* (2002) Minerals of the Carpathians. Granit, Prague.**	Book
	minerals diadochite and of the hydrotalcite-manasseite group. She has published about 25 articles. Milan Novák... pit jama. šachta akna wyrobisko. odkrywka quarry lom kőfejtő kamienioiom river feka folyó...vershyna. pik pit put šachta shakhta. karyer quarry carieră (de piatră) lom karyer river râu ...Lower Cambrian ore belt, hosted by the Tulgheş Group, contains several stratiform pyrite-copper ores...rocks of medium and high grades. The Sebeş-Lotru Group is built-up of medium K R A K O W • í X X X X
	*(1961) Bibliography of North American geology, 1958. Bulletin* Vol. 1115. US Geological Survey doi:10.3133/b1115**	Report (volume)
	in italics .and indented two spaces, are used to group entries under the geographic he~dings· and under...will be included under the larger, more general group heading rather than under an individual entry: that...Abilene Geological Society, Stratigraphic and Study Group. 1. The time rock units of west central Texas in...Chemical analyses of the fluid inclusions in a group of New Mexico minerals: Econ. Geology, v. 53, no...of Stratigraphy ana paleontology of the Hunton group in the Arbuckle Mountain region, Okla. Geol. Survey
	*(1961) Bibliography of North American geology, 1959. Bulletin* Vol. 1145. US Geological Survey doi:10.3133/b1145**	Report (volume)
	in italics and indented two spaces, are used to group entries under the geographic headings and under...will be included under the larger, more general group heading rather than under an individual entry: that...Seismology, Serle A, Travau:x Scientifiques. Toulouse, France. Internat. Ser. Mons. Earth Sci.-International...1959. 2. Facies analysis of Upper Devonian Wabamun group in west-central Alberta [abs.], in Alberta Soc....1959. Belyea, Helen Reynolds. Devonian Elk Point group, central and southern Alberta : Canada Geol. Survey

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Wolframite Group from Les Roches quarry, Montebras, Soumans, Aubusson, Creuse, Nouvelle-Aquitaine, France

Wolframite Group from
Les Roches quarry, Montebras, Soumans, Aubusson, Creuse, Nouvelle-Aquitaine, France