[PDF][PDF] The simpsonite paragenesis: The crystal chemistry and geochemistry of extreme Ta fractionation

TS Ercit - 1986 - mspace.lib.umanitoba.ca
… the simpsonite paragenesis can be exptainec cn the basis of either increas- … Defj.:.ing
the simpsonite paragenesis as:he suite of all oxide mineral species associated wilh …

[PDF][PDF] The paragenesis of pyrophanite from Sierra de Comechingones, Córdoba, Argentina

F Zaccarini, G Garuti, A Ortiz-Suarez… - Canadian …, 2004 - researchgate.net
… , Province of Córdoba, and provide an extended set of electron-microprobe data on
pyrophanire and the associated oxides and silicates, along with observations on paragenesis and …

Mineral paragenesis, geochemistry and fluid characteristics of the Kara scheelite-magnetite skarn deposit, Northwestern Tasmania

B Singoyi - 1995 - figshare.utas.edu.au
… Mineral paragenetic studies reveal at least four stages of skarn formation and ore deposition…
A brief, slightly different description of mineral paragenesis from the preliminary work of this …

Mineralogy and paragenesis of “pocket” clays and associated minerals in complex granitic pegmatites, San Diego County, California

EE Foord, HC Starkey… - American …, 1986 - pubs.geoscienceworld.org
Paragenetic relationships indicate a decrease in Na relative to Ca during the crystallization
of zeolites and a decrease in Li and Al–concomitant with an enrichment of Ca, Mg, and Si–…

Paragenetic relationships, geochemistry and petrogenetic significance of primary FeMn phosphates from pegmatites: The case study of Cañada (Salamanca, Spain) …

E Roda-Robles, A Pesquera, W Simmons… - Lithos, 2020 - Elsevier
… However, also paragenetic and geochemical factors appear to be important. … Taking into
account the structural constraints, we focus here on paragenetic and geochemical aspects of …

Paragenesis and composition of xenotime-(Y) and florencite-(Ce) from unconformity-related heavy rare earth element mineralization of northern Western Australia

T Nazari-Dehkordi, C Spandler - Mineralogy and Petrology, 2019 - Springer
… This study investigates the paragenesis and ore mineral composition of xenotime [(Y,HREE)PO
4 ] and florencite [LREEAl 3 (PO 4 ) 2 (OH) 6 ] from heavy rare earth element (HREE) …

[PDF][PDF] THE CRYSTAL STRUCTURE OF ALUMOTANTITE: ITS RELATION TO THE STRUCTURES OF SIMPSONITE AND THE (Al, Ga)(Ta, Nb) O. COMPOUNDS T …

C Minerologist - rruff.geo.arizona.edu
… role in simpsonite-alumotantite topotaxy; the same topotaxic relationship between simpsonite
and alumotantite is shown by both parageneses despite their differences in mineralogy. …

Paragenesis and chemistry of multistage tourmaline formation in the Sullivan Pb-Zn-Ag deposit, British Columbia

SY Jiang, MR Palmer, JF Slack… - Economic …, 1998 - pubs.geoscienceworld.org
… (British Columbia, Canada) document multiple paragenetic stages and large compositional
variations. … The different paragenetic stages and their respective tourmaline compositions are …

Phosphate mineral associations in the Canada pegmatite (Salamanca, Spain): Paragenetic relationships, chemical compositions, and implications for pegmatite …

E Roda, A Pesquera, F Fontan… - American …, 2004 - pubs.geoscienceworld.org
… First, we investigate the exceptional mineralogical features of the pegmatite and give an
interpretation of their paragenetic relationships and chemical trends. Second, we discuss the …

Mineralogy, paragenesis and genesis of the braunite deposits of the Mary Valley Manganese Belt, Queensland, Australia

J Ostwald - Mineralium Deposita, 1992 - Springer
The Mary Valley manganese deposits exhibit mineralogy and textures characteristic of at
least four parageneses. The deposits consist mainly of isolated occurrences of braunite, …