KSIĄŻKI POWIĄZANE ZE SŁOWEM «PICOTITE»
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1
New Zealand Journal of Geology and Geophysics
In one thin section (7890) chromite, but not picotite, is present; and in the clino-
pyroxene-rich rocks (7880, 7884) the place of picotite is taken by subhedral
magnetite. In another small nodule in 7880 granular magnetite and picotite both
occur, ...
2
Rock-forming Minerals in Thin Section
Spinel MgAl2O4 cubic-hexaoctahedral Hercynite FeAl,O4 Picotite (Mg,Fe)(Al, Fe,
Cr)2O4 Chromite FeCr2O4. General features: divided into three subgroups:
Aluminospinel or spinel s.s. (spinel, hercynite, pleonaste). ferrospinel (magnetite;
...
Hans Pichler, Cornelia Schmitt-Riegraf, 1997
3
Mineral deposits of China
5) include noncrystalline mafic ultrabasic lumps, and the minerals have been
wholly altered. Peridotites are dominant and include dunite , chrome-pyrope-
bearing peridotite , picotite peridotite , and picotite chrome- pyrope-bearing
peridotite.
4
Geology and Petrology of the Galápagos Islands
Phenocrysts of bytownitc and olivine, the latter with inclusions of picotite. The
groundmass consists of labradorite laths, with granules of titaniferous augite and
euhedral magnetite; elsewhere in the groundmass, but not shown, are clusters of
...
Alexander R. McBirney, Howel Williams, 1969
5
Tectonics of the Western Mediterranean and North Africa
... ZTR-GARNET STAUROLITE picotite ZTR-GARNET STAUROLITE chloritoid
picotite ZTR-GARNET STAUROLITE picotite rudite to arenite beds with dominant
serpentinite grains and Lower Cretaceous lime-mudstone clasts with
calpionellids ...
G. Moratti, A. Chalouan, 2006
Chromate of lead prepared artificially is extensively used for its yellow color. This
subject will be considered later in connection with the origin of the oxides
chromite and picotite. Chrom ium-bcaring minerals. Oxides : Chromite (chromic
iron ...
7
A Study of Serpentinite: The AMSOC Core Hole Near Mayaguez, ...
In rocks which are not 100 per cent serpentinized, an olive brown translucent
picotite is present. It is rimmed and veined by opaque oxide. The amount of
opaque oxide increases somewhat as serpentinization approaches 100 per cent,
but at ...
8
U.S. Geological Survey Professional Paper
Samples from the Grandstand and Chandler Formations are characterized by a
suite of minerals that includes garnet, tourmaline, zircon, picotite, biotite,
muscovite, chloritoid, hornblende, and apatite and (or) andalusite. Within this
suite the ...
9
Geological Survey Professional Paper
Scattered picotite grains are accessory. Ultramafic rocks in the Holden mine and
on Buckskin Mountain differ considerably from the serpentine bodies and from
other ultramafic masses that have been described in the northern Cascades (for ...
Geological Survey (U.S.), 1982
10
Tectonic emplacement of the Burro Mountain ultramafic body: ...
1/ 2) Planar concentrations of picotite. Picotite, which constitutes 1-2$ of the bulk
of ultramafic rock, is usually homogeneously disseminated throughout. However,
in dunite bands, this mineral is frequently concentrated along certain planes ...
Stephen Howell Burch, 1965
