Results 11 to 20 of about 3,307 (182)

Mineralogy and geochemistry of alkali feldspars from the Tanco pegmatite, southeastern Manitoba

open access: yesThe Canadian Mineralogist, 2001
The alkali feldspar paragenetic sequence in the Tanco pegmatite at Bernic Lake, Manitoba, spans the entire crystallization and cooling history of the pegmatite, and includes six different K(Rb)-feldspar and six different albite varieties. Total feldspar modal abundances approach 50% for the entire pegmatite volume. Blocky K-feldspar, aplitic albite and
Jarrod A. Brown   +2 more
openaire   +2 more sources

High‐Pressure Na‐Ca Carbonates in the Deep Carbon Cycle

open access: yesGeophysical Monograph Series, Page 127-136., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey Rashchenko   +2 more
wiley  

+1 more source

P-T path fluid evolution in the Gross Spitzkoppe granite stock, Namibia [PDF]

open access: yesBulletin of the Geological Society of Finland, 2002
The Gross Spitzkoppe granite stock (GSS) is a zoned 30 km2 epizonal intrusion that consists of three main granites: 1) medium-grained biotite granite (marginal), 2) a coarse-grained biotite granite, and 3) a central, porphyritic granite.
S. Frindt, M. Poutiainen
doaj   +1 more source

Routine characterization and interpretation of complex alkali feldspar intergrowths [PDF]

open access: yes, 2015
Almost all alkali feldspar crystals contain a rich inventory of exsolution, twin, and domain microtextures that form subsequent to crystal growth and provide a record of the thermal history of the crystal and often of its involvement in replacement ...
Fitz Gerald, John D.   +2 more
core   +1 more source

Amazonitic alkali feldspar from the Tanakami Granitic pegmatite, southwest Japan

open access: yesJournal of Mineralogical and Petrological Sciences, 2010
This is the first detailed description of amazonitic alkali feldspar in Japan. The amazonitic feldspar is from pegmatite in the Tanakami Granite, southwest Japan. Macroscopically, the feldspar is characterized by the coexistence of pale blue and white parts.
Satoshi NAKANO, Kuniaki MAKINO
openaire   +2 more sources

Internal framework and geochemistry of the Carboniferous Huaco granite pluton, Sierra de Velasco, NW Argentina [PDF]

open access: yes, 2018
The A-type Huaco granite pluton of the Velasco range (Sierras Pampeanas of northwest Argentina) is formed by three coeval granitic facies and contains subordinate coeval-to-late facies, as well as enclaves, dikes and stocks that show different temporal ...
Grosse, Pablo   +3 more
core   +2 more sources

Diffusion-controlled and replacement microtextures in alkali feldspars from two pegmatites: Perth, Ontario and Keystone, South Dakota [PDF]

open access: yesMineralogical Magazine, 2015
AbstractMacro- and micro-perthitic microclines from pegmatites from Perth, Ontario (Wards catalogue 46 E 0510) and Keystone, South Dakota (Wards 46 E 5125) have been studied using light and electron microscopy. A sample of the type perthite from Perth, Ontario (Hunterian Museum, Glasgow, M2361)was compared using light microscopy.
Lee, Martin R., Parsons, Ian
openaire   +2 more sources

Enhancing Membrane Materials for Efficient Li Recycling and Recovery. [PDF]

open access: yesAdv Mater
This review article systematically explores the recent advances in the membrane processes for lithium cycling and recovery, offering the first correlation between these technologies and technology readiness levels, unveiling the fundamentals for the lithium separation, and providing insights into the future design of membrane materials from both ...
Tian X   +7 more
europepmc   +2 more sources

Water- and Boron-Rich Melt Inclusions in Quartz from the Malkhan Pegmatite, Transbaikalia, Russia [PDF]

open access: yes, 2012
In this paper we show that the pegmatite-forming processes responsible for the formation of the Malkhan pegmatites started at magmatic temperatures around 720 °C.
Badinina, E, Davidson, P, Thomas, R
core   +3 more sources

The effect of P2O5 on the viscosity of haplogranitic liquid [PDF]

open access: yes, 1993
The effect of P2O5 on the viscosity of a haplogranitic (K2O-Na2O-Al2O3-SiO2) liquid has been determined at 1 atm pressure in the temperature interval of 700 - 1650°C. Viscosity measurements of a haplogranite, haplogranite + 5.1 wt.% P2O5 and haplogranite
Dingwell, Donald B.   +2 more
core   +1 more source

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