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Topic: Juonniite

	492
		It is represented by a new mineral, juonniite, simplified formula CaMgSc(PO This mineral is from overite group minerals according to X-ray diffraction data, physical properties and stoichiometry.
		Juonniite occurrences are confined to a NE-trending linear long-living fault, which intersects phoscorites and carbonatites.
		Isotopic data, defined on hydrothermal phosphates paragenetic to juonniite, show that hydrothermal solutions were derived from calcite carbonatites, but not from dolomitic carbonatites hosting this kind of mineralization and had were not mixed with crustal sources, e.g.
	camb.demonhosting.co.uk /JConfAbs/4/492.html (7948 words)

	Proceedings of the MSTU vol.3 No.2 2000
		It is represented by altered dolomite carbonatites containing a new mineral, juonniite in mineralised caverns.
		Juonniite occurrences are confined to a linear reactivated fault, which intersects phoscorites and carbonatites.
		Late hydrothermal solutions affected cataclastic clinohumite-bearing phoscorites along the fault zone and the subsequent dissolution of sulphides and Sc-bearing minerals (e.g.: forsterite, baddeleyite, pyrochlore group minerals, etc.) was accompanied by mobilisation of traces of Sc, most likely, in the form of carbonate and sulphate.
	www.mstu.edu.ru /publish/vestnik/v03_2_n07/eng_cont.html (2704 words)

	LookSmart - Search results for "Juonniite" (Site not responding. Last check: 2007-10-15)
		Posts the location where juonniite is found, its density, frequency of its mineral occurrence, crystal system, color, streak, aggregates, and its hardness.
		1926; not originally recognized as a scandium mineral), jervisite (1982), cascandite (1982), juonniite (1997), pretulite (1998), scandiobabingtonite (1998), and kristiansenite (2002).
		Euro 45.00 J-017 Juonniite, Kovdor Massif, Kola Peninsula, Russia (T.L.; IMA 1996-060) Aggregates of mm-sized brown Juonniite crystals or as individual crystals on matrix 2x2.5 cm (1) Euro 40.00 J-010...
	www.looksmart.com /r_search?look=&key=Juonniite (352 words)

	OLD NEWS CORNER
		It occurs in fan-shaped aggregates of single bladed tabular xx with bobbierite, pyrite, collinsite, chlorite, natrolite, juonniite in veins of vuggy dolomite carbonatite.
		Mingram, B et al.: A petrogenetic study of anorogenic felsic magmatism in the Cretaceous Paresis ring complex, Namibia: evidence for mixing of crust and mantle-derived components.
		Gladiusite is monoclinic and occurs in vugs within veins of mineralized dolomitic carbonatite w/dolomite, pyrochlore, magnetite, pyrite, rutile, ternovite-like phase, catapleiite, bobierrite, rimkorolgite, juonniite, strintiowhitlockite, collinsite, and chlorite.
	www.koeln.netsurf.de /~w.steffens/olds.htm (10864 words)

	290
		An occurrence of juonniite, a new phosphate of Sc was discovered recently in the Kovdor alkaline-ultrabasic massif.
		This mineral formed with posterior phosphate associations in cavities and fissures of mineralized dolomite carbonatites during hydrothermal alteration of these rocks.
		Sr isotopic composition was studied in phosphates, which are paragenetic to juonniite, and in carbonate-fluorapatite, which is a cement-forming mineral of apatite- "francolite" breccias.
	camb.demonhosting.co.uk /JConfAbs/4/290.html (13040 words)

	GLADIUSITE, Fe3+2(Fe2+,Mg)4(PO4)(OH)11(H2O), A NEW hydrothermal MINERAL SPECIES FROM THE PHOSCORITEûCARBONATITE ...
		It occurs in vugs within veins of mineralized dolomite carbonatite.
		Associated minerals are dolomite, pyrochlore, several generations of magnetite, pyrite, rutile, a ternovite-like phase, catapleiite, bobierrite, rimkorolgite, juonniite, strontiowhitlockite, collinsite (including a Sr-rich variety) and chlorite.
		Lui sont associées dolomite, pyrochlore, plusieurs générations de magnétite, pyrite, rutile, une phase ressemblant à la ternovite, catapléiite, bobierrite, rimkorolgite, juonniite, strontiowhitlockite, collinsite (y inclus une variété riche en Sr) et chlorite.
	www.nrc.ca /cisti/journals/mineral/147738-6.html (745 words)

	Scandium (Site not responding. Last check: 2007-10-15)
		Scandium is usually made as a byproduct of refining uranium.
		Scandium can be obtained from the minerals Thortveitite (found in granitic pegmatite rocks and named after the Norwegian engineer O. Thortveit), Bazzite (found in pegmatite's and alpine-vein rocks and named after the Italian engineer, A. Bazzi), and Juonniite (found in Metasomatically reworked calcite-phlogopite-clinohumite-magnetite ores in a calcite-dolomite carbonatitic stock work zone).
		Scientists are hoping Scandium might have applications in the aerospace industry.
	teachers.northallegheny.org /BJORDEN/Periodic%20Table_files/geza%20scandium/SCANDIUM!.htm (210 words)

	LookSmart - Guides to Juonniite (Site not responding. Last check: 2007-10-15)
		Guides to Juonniite - Browse resources regarding the chemical and physical attributes of this mineral.
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	altavista.looksmart.com /eus686889/eus10180175/eus10180173/r?lt&pin=030827x088fe19661c3819f7e1& (131 words)

	Diederik Visser Minerals - Minerals I & J
		Juonniite, Kovdor Massif, Kola Peninsula, Russia (T.L.; IMA 1996-060)
		Aggregates of mm-sized brown Juonniite crystals or as individual crystals on matrix
		All photos by Diederik Visser Minerals and are Copyrighted © and may not be used without permission
	www.dvminerals.com /ij.html (438 words)

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