10 ENGLISH BOOKS RELATING TO «FELDSPATHOID»
Discover the use of
feldspathoid in the following bibliographical selection. Books relating to
feldspathoid and brief extracts from same to provide context of its use in English literature.
1
Tectosilicates: Feldspar,
Feldspathoid, Quartz Varieties, ...
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2
Igneous and Metamorphic Petrology
For example, a rock whose mode in terms of QAPF plots at U is a quartz syenite,
V is a monzonite, W is a feldspathoid-bearing monzodiorite, X is a feldspathoid
monzodiorite, and Z is a feldspathoid syenite. Rocks plotting in the small darkly ...
3
A Dictionary of Geology and Earth Sciences
The group includes the minerals *nepheline (a sodic feldspathoid), *leucite (a
potassic feldspathoid), and *sodalite (a sodium, chlorine-bearing feldspathoid).
The mineral *analcime, although a *zeolite, is closely related to the feldspathoids
...
4
Melt Inclusions in Volcanic Systems: Methods, Applications ...
All samples have abundant normative nepheline and modal feldspathoid, both as
groundmass phases and as euhedral phenocrysts, commonly quite large. All
contain microphenocrysts of titanian clinopyroxene, titanite, apatite and variably ...
B. De Vivo, R.J. Bodnar,
2003
Cf: paleovolcanic. nepheline (neph'-e-line) A hexagonal feldspathoid mineral: (
Na,K)AlSiO4. It occurs as glassy crystals or colorless grains, or as coarse crystals
or green to brown masses of greasy luster without cleavage, in alkalic igneous ...
Julia A. Jackson, James P. Mehl, Klaus K. E. Neuendorf,
2005
6
Igneous Rocks and Processes: A Practical Guide
Box9.1 Feldspathoid minerals and melilite Feldspathoids ('foids' for short) are the
key minerals that identify silicaundersaturated rocks. Those that occur in igneous
rocks (i.e. disregarding scapolite) have compositions that can be thought of as ...
7
U.S. Geological Survey professional paper
This is a pyroxene- rich olivine-bearing ultramafic volcanic rock which contains
no visible feldspar or feldspathoid, although its chemical analysis indicates that a
little calcic plagioclase and considerable feldspathoid are occult in the brown ...
Geological Survey (U.S.),
1963
8
Essentials of Igneous and Metamorphic Petrology
4.4.5 Feldspathoid Silica Saturation Index To distinguish these three types of
alkaline rocks, Frost and Frost (2008) defined one additional index, the
Feldspathoid Silica Saturation Index (FSSI): FSSI = (Q – (Lct + 2Nph))/100 Where
Q, Lct, and ...
B. Ronald Frost, Carol D. Frost,
2013
9
Field Guide to Rocks & Minerals of Southern Africa
Orthoclase has a similar distribution pattern to that of microcline and can be
found in the pegmatites in that area. FELDSPATHOID GROUP The feldspathoids
are a group of minerals chemically related to the feldspars, but contain less silica.
10
The Encyclopedia of the Solid Earth Sciences
feldspathoid minerals change from monoclinic sodium sanidine to triclinic
anorthoclase (Fig. F9). Phase relationships in plagioclase (Fig. F10) are much
less well understood than alkali feldspar. The liquidus and solidus form a simple
loop, ...