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In general, disorder and order in (Si,Al) distribution in K-feldspars are associated
respectively with high and low temperature, but low microcline is not uncommon
even in rapidly cooled cryptoperthites, perhaps because of the influence of the ...
William Alexander Deer, Robert Andrew Howie, J. Zussman, 2001
2
Cambridge Guide to Minerals, Rocks and Fossils
MlNERALS Orthoclase/microcline: prismatic habit Orthoclase/microcline:
Carlsbad twin Orthoclase/microcline: Baveno twin Feldspar group The feldspars
are the most abundant of all minerals in the Earth's crust, and are widely
distributed in ...
Arthur Clive Bishop, Alan Robert Woolley, William Roger Hamilton, 1999
3
Geological Survey Professional Paper
... associated pegmatites which have reported ages of 2,645 ±60 Ma (lead-lead
whole-rock, Nkomo and others, 1978) and 2,663 and 2,584 Ma (rubidium-
strontium for pegmatitic muscovite and microcline respectively, Giletti and Gast,
1961).
Geological Survey (U.S.), 1986
4
Criminal and Environmental Soil Forensics
However, when the 700 to 800 cm−1 region is compared, there are clearly four
peaks for the albite spectrum, whereas both microcline pink and microcline white
have two peaks (Figure 27.6). The third microcline studied, which was not ...
Karl Ritz, Lorna Dawson, David Miller, 2008
5
U.S. Geological Survey professional paper
... 1,480; Curecanti Quartz Monzonite, 1,420; pegmatite (microcline age), 1,360;
and diabase, 510. Field relations indicate a wide range of pegmatite ages. Units
and events correlate well between the Black Canyon and other parts of Colorado.
Geological Survey (U.S.), 1968
6
Contributions to Geochemistry, 1949
The large microcline crystal in this half reflects light brightly and when properly
oriented before the camera gave the result shown in plate 5B. This illustration (
natural size) also shows very clearly the corroded outlines of the microcline
crystal ...
Walter Wallace Brannock, 1953
7
Selected Petrogenic Relationships of Plagioclase
Potash feldspar is black. (Syenite, Marathon Co., Wisconsin. X200. E-44-28).
Patch perthite, microcline remnants in plagioclase host. Microcline is cross-
hatched. Plagioclase (11% An) is gray. (Gray syenite, Marathon Co., Wis. X150.
Dt-15).
Richard Conrad Emmons, 1953
8
Thorium investigations 1950-52, Wet Mountains, Colorado
Migmatite The biotite granite gneiss in many places has been intruded lit-par-lit
by microcline granite to form migmatite or injection gneiss. The introduced
granitic material ranges from intrafoliational films to sills several feet wide; most ...
Robert Adam Christman, 1953
9
Earth Materials: Introduction to Mineralogy and Petrology
Occurrence: Microcline and orthoclase, the lowest- and medium-temperature
polymorphs (Figs. 7.7 and 5.37), are common as anhedral and euhedral grains in
many igneous and metamorphic rocks. Both are found in granite, granodiorite, ...
Cornelis Klein, Anthony Philpotts, 2012
The feldspars of the normal sillimanite granite are consistently and predominantly
microcline, with only a little associated plagioclase. In the garnetiferous facies the
plagioclase may be as abundant as microcline. Alaskite is found, at least ...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «MICROCLINE»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
microcline w wiadomościach.
Metals of Africa identifies new base metal targets at Rio Mazoe
Recent reconnaissance and mapping identified an exciting BHT alteration assemblage of minerals that includes amazonite (green microcline ... «Proactive Investors Australia, Lip 14»
Metals of Africa raises funds; focus on Rio Mazoe Project in …
Meque outcrops range in thickness from 15 metres to 40 metres and consist of varying proportions of microcline, spessartine garnet, quartz, ... «Proactive Investors Australia, Cze 14»
Ianthinite, rare uranium oxide mineral discovered in Mahbubnagar …
The researchers also found other minerals like anatase, rutile, microcline, biotite, and quartz from Akkavaram. "Ianthinite plays a key role in ... «Times of India, Lut 14»
Unraveling the Secrets of the Atomic Rock
The sand at Trinity Site is composed of quartz, microcline, albite, muscovite, actinolite and calcite. “Only quartz is found in trinitite,” says Eby. «UMass Lowell, Lip 13»
Stricter rules for WBJEE this year
"Apart from special security features like microcline printing that is being used for admit cards, thumb impression of candidates will be verified ... «Times of India, Kwi 13»
Lithex Resources completes JORC resource on Moolyella tailings …
The quartz spodumene-albite-microcline pegmatites are the primary source of tin, tantalum and lithium mineralisation in this district. «Proactive Investors Australia, Kwi 12»
How to: archive and back up photos
... iniquity spanworm potometer perviousness ostiarius unsonantal inconcurring thruster microcline retravel kantry acceptilate ghole abstemious ... «What Digital Camera, Wrz 10»
