与 «PEGMATITIC»相关的英语书籍
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1
The Economic Geology of Iran: Mineral Deposits and Natural ...
Name D° M S” D° M S” Size Host rock/age mineralization phases Morphology
Elem para 1 Agh Bolagh 36 48 O 47 14 O S Granite/Upper Precambrian
Pegmatitic Pan-African Vein 2 Anarak 32 O 24 55 4O 19 I Granite/Precambrian
Pegmatitic ...
Igneous textures typical of plutonic rocks include coarse-grained pegmatitic,
phaneritic and phaneritic—porphyritic textures. Lava that cools on Earth's surface
loses heat quickly. As a result, many crystals are invisible to the eye and produce
...
Kevin Hefferan, John O'Brien, 2010
3
Cordilleran Metamorphic Core Complexes
Mount Leona to Medium-grained, biotitic, sillimanite- <60 Very Sherman Pass
bearing schist and gneiss, phlogopitic common marble, quartzite *These map
units are shown in Figure 2. Granitic, Porphyritic, Pegmatitic Gneiss. The lowest ...
Max D. Crittenden, Peter J. Coney, George Herbert Davis, 1980
4
Geological Survey Professional Paper
... facies (thin section Ro319a; table 1). Thus, at least in places, the mafic border
facies is somewhat older than the main facies. Mafic inclusions as large as 15 cm
are sparse in the pluton, but pegmatitic, aplitic, and mafic dikes are common.
Geological Survey (U.S.), 1988
5
Atlas of the Textural Patterns of Ore Minerals and ...
Thus, typical interrelated pegmatitic-granitic elements might be in mineralogical
association of pegmatitic or hydrothermal stage, but also typical mantle elements
(i. e., B group elements: Mn, Fe, Cu, Ag and Au) might be in mineralogical ...
Stylianos Augustithis, 1995
6
U.S. Geological Survey Professional Paper
At this point there lies in the granite an elongated pegmatitic mass which contains
gold and is mined as ore. There is also gold in the neighboring granite or diorite.
Specimens of this pegmatitic rock shown to the writer by Mr. Weed are ...
7
Geological Survey of Canada, Open File 3057
Immediately overlying this medium-grained group, and above the massive
sulphide horizon, is a coarse-grained to pegmatitic variety developed adjacent
the upper intrusive contact. Although these samples generally have a much
coarser ...
8
Economic Geology of the Georgetown Quadrangle (together with ...
The granite itself contains considerable magnetite, and where it becomes coarse
granite and approaches a pegmatitic structure, even though it is not pegmatite
properly speaking, much of it contains considerable lumps of this mineral.
Josiah Edward Spurr, George H. Garrey, Sydney Hobart Ball, 1908
9
Geochemical Methods of Prospecting for Non-Metallic Minerals
The significance of the various indicators differs at different stages: elements and
minerals forming broad and contrasting haloes near pegmatitic bodies are
important in prospecting, whereas minerals and elements displaying clear
correlation ...
Igor' L. Komov, A. N. Lukashev, A. V. Koplus, 1994
10
Issues in Geology and Mineralogy: 2011 Edition
“The behavior of tantalum and zirconium in pegmatitic systems has been
investigated through the determination of Ta and Zr solubilities at
manganotantalite and zircon saturation from dissolution and crystallization
experiments in hydrous, Li-, ...
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Kivalliq's summer program at Hatchet Lake advances priority target …
Radioactive quartz- feldspar-biotite pegmatitic boulders, subcrop and outcrop were encountered during the program. Twenty-four rock samples ... «Your Nuclear News, 六月 15»
Valence Industries (ASX:VXL) Valence Half Year Report to 31 …
This is attributable, in part, to the very high grade Arterial FlakeTM graphite contained in the pegmatitic intrusions as announced on 9 October ... «ABN Newswire, 三月 15»
Kivalliq Energy's acquisition of Rio Tinto's Hatchet property a …
... by Hathor in 2008, 19 of them returned results greater than 0.2% uranium oxide, with a high of 1.17% uranium in a pegmatitic boulder. «Proactive Investors USA & Canada, 二月 15»
A Visit To The Canada Carbon Miller Project: An Unusual And …
The pods are pegmatitic in nature and generally occur in the contact zone between the paragneiss and marble. Numerous graphite veins have ... «Nasdaq, 一月 15»
Valence Industries (ASX:VXL) Uley Graphite Grade Increases to …
... (refer ASX announcement 9 Oct 2014) contained in the pegmatitic intrusions previously undiscovered on the Uley GraphiteTM tenements. «ABN Newswire, 十一月 14»
The eternal temptation of tantalum, Alkane and MDN lead the pack
The property comprises a nepheline syenite dyke exhibiting pegmatitic texture that stretches more than three kilometers. It hosts a niobium and ... «InvestorIntel, 九月 14»
Lomiko Options 40% of the La Loutre Crystalline Flake Graphite …
... the Grenville Province and includes quartzofeldspathic rocks, quartzite, biotite gneiss, marble and locally pegmatitic quartzofeldspathic rocks. «Marketwired, 九月 14»
Happy Birthday Plate-Tectonics !
Contact between massive Central-Gneiss (background) with large pegmatitic quartz vein and metamorphic marbles (foreground) with visible ... «Scientific American, 九月 14»
PEG Ratio (5 yr expected):
... explores, and develops mineral properties in Australia. It primarily explores for gold, nickel, platinoids, phosphates, and pegmatitic related mineralization. «Yahoo!7 News, 八月 14»
Unrest at Okorusu Fluorspar
Part of an alkaline igneous-carbonatite ring dike complex where fluorite has replaced pegmatitic carbonatite, the mine is famous for outstanding ... «Informante, 六月 14»
