CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «LABRADORESCENT»
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Distribution of exploitable deposits of anorthositic rocks with labradorescent
plagioclase in the Hellvik area, central part of the Egersund-Ogna Massif. See Fig
. 1 for localisation of map. Prospects are numbered. of large blocks of overall
good ...
2
Precious Stones: A Popular Account of Their Characters, ...
LABRADORESCENT FELSPAR. A beautiful coloured sheen is a noticeable
feature of the potash-felspar or orthoclase found in the south of Norway between
the Christiania and Langesund fjords. It occurs in masses in an augite-syenite, a
rock ...
3
Igneous and Metamorphic Petrology
Particularly characteristic of massif-type anorthosites are iridescent (“
labradorescent” or “schillar”) plagioclases produced by optical interference from
regularly spaced, very fine exsolution lamellae in the composition range between
An56 and ...
4
Earth Materials: Introduction to Mineralogy and Petrology
Figure 9.47 (A) Large single meter-size crystal of labradorescent plagioclase.
plagioclase rich than gabbro and is, therefore, a lighter color (Fig. 9.44(A)).
Plagioclase crystals in diorite have complex zoning patterns, such as that shown
at the ...
Cornelis Klein, Anthony Philpotts, 2012
5
Stones of the New Consciousness: Healing, Awakening and ...
The base color of Nuummite is charcoal gray to black, and its labradorescent
shades include red, orange, gold, yellow, green, blue and violet. The most
common reflected color is gold. Nuummite is mined in a remote area of
Greenland and ...
6
Gems: Their Sources, Descriptions and Identification
Blue labradorescent twinning bands become dark and vice versa. Found in
Tanzania; Mexico, Russia, Brazil and widely distributed throughout the USA (in
addition to the commercial Oregon deposits of faceting-grade labradorite (see ...
7
The Book of Stones: Who They Are and What They Teach
The base color of Nuummite is charcoal gray to black, and its labradorescent
colors include red, orange, gold, yellow, green, blue and violet. The most
common reflected color is gold. Nuummite is mined in a remote area of
Greenland and can ...
Robert Simmons, Naisha Ahsian, 2007
8
The Geology of southernmost Norway: an excursion guide : a ...
On the W side of the valley between the two ponds (Piggsteintjorni and Auratjorni
). the outcrops beautifully display the anorthositic-noritic complex. Aggregates of
megacrysts of plagioclase (up to 30 cm in length, labradorescent, granulated) ...
C. Maijer, Peter Padget, 1987
... 14, 174 Agate-opal, 181 Akerite, 200 Alabandin Ruby, 198 Alabaster, 286
Egyptian, 207 Alabastrites, 207 Alalite, 219 Albite, 214 labradorescent, 214 Albite
-moonstone, 214 Alexandrite, 201 Allotriomorphic crystals, 49 Allotriomorphism, ...
Wilbert Goodchild, Robert Dykes, 1908
10
Otanmäki, the ilmenite-magnetite ore field in Finland
Still some distance farther away from the contact the rock grades over into coarse
-grained anorthosite-gabbro containing labradorescent plagioclase phenocrysts.
The transition takes place gradually over a short distance, Table II. Modes of the ...
