10 BÜCHER, DIE MIT «SAGENITIC» IM ZUSAMMENHANG STEHEN
Entdecke den Gebrauch von
sagenitic in der folgenden bibliographischen Auswahl. Bücher, die mit
sagenitic im Zusammenhang stehen und kurze Auszüge derselben, um seinen Gebrauch in der Literatur kontextbezogen darzustellen.
Inclusions of titanite and rutile in biotite may form a sagenitic texture, where rays
of slender, needlelike inclusion grains intersect at angles of 60°. This topic was
reviewed by Shau et al. (1991) in their optical. TEM. AEM. and EPMA study of ...
M. E. Fleet, Robert Andrew Howie, 2003
2
Ultrahigh-pressure Metamorphism: Deep Continental Subduction
Figure 2. (A) Pre-Alpine porphyroblastic garnet (Grt1), ~2 cm in diameter rimmed
with smaller Alpine garnets (Grt2). The overgrowth of Alpine Grt2 is evident from
the presence of sagenitic rutile (darker Grt2). (B) Detail of an Alpine garnet (Grt2)
...
Bradley R. Hacker, William C. McClelland, J. G. Liou, 2006
3
United States Geological Survey Professional Paper
In the later stages of the metamorphism the biotite was altered to chlorite with the
separation of rutile needles, making sagenitic structures; the andalusite and
feldspar were sericitized. In many of the large crystals of muscovite very peculiar
...
4
Geological Survey Professional Paper
One is amorphous carbon; the other is a transparent microacicular and columnar
mineral distributed randomly as a fine sagenitic mesh and tentatively identified as
rutile. In addition, slightly larger occasional grains of opaline silica, apatite and ...
Geological Survey (U.S.), 1983
5
Trondhjemites, dacites, and related rocks
Ilmenite Spinel - Calcic Oligoclase/Alkali Feldspar Orthopyroxene Mg Amphibole
CI inopyroxene Actinolite 2° Hornblende Biotite Sagenitic Biotite Sagenitic Biotite
+ Epidote Quartz Increases Plagioclase Decreases Non-Sagenitic Biotite ...
sents probably the the relict original biotite with high Ti content. Collerson and
Bridgwater (1979) have described that sagenitic biotites from Archaean gneisses
of Labrador are simple pseudomorphs of granulite facies xenoblastic hornblende
...
7
Gems: Their Sources, Descriptions and Identification
(1) Nephrite; (2) chlorastrolite staurolite crocidolite (tiger's-eye) operculum
yellowish red garnet mixture of quartz, green dickite and an organic substance
copal resin argillite sagenitic amethyst sagenitic quartz Agate (Indian) baroque ...
8
Geological Survey Bulletin
The presence of sagenitic rutile in chlorite and of seri- citic pseudomorphs in
altered rocks is indicative of the former presence of biotite in the rock. In weakly
altered dacite, sagenitic rutile, generally altered to leucoxene, is common in
biotite ...
9
Gems and Gemstones: Timeless Natural Beauty of the Mineral World
Sometimes, in fact, treated green Quartz is referred to as “greened amethyst.”
There is also synthetic green Quartz that is occasionally used for inexpensive
jewelry. Prasiolite figure 74. Natural crystal of rutilated (sagenitic) Quartz with
surface.
Lance Grande, Allison Augustyn, 2009
10
Alkaline Magmatism in Central-eastern Paraguay: ...
... Ne*,Op, OI,Ap Sagenitic Cpx Trachy- andesite 236 3366 Porphyritic Cpx, PI
Cpx, PI, Op, Biot, Am Holocrystalline Pl,Af, Cpx, Biot, Ne*, Op, Biot, Am, Ap, Zr
Xenoliths: Ol+Op+Biot+Af; sagenitic Cpx Rock-type Trachy- andesite Theralile
Trachy- ...
Piero Comin-Chiaramonti, Celso Barros Gomes, 1996
