- faces. An
intermediate texture with some
crystal face-formation is
termed subhedral (also
known as
hypidiomorphic or hypautomorphic).
Crystals that grow from...
-
characteristic faces, well-formed.
Synonymous terms: idiomorphic, automorphic;
Subhedral: a
crystal partially bounded by its
characteristic faces and partially...
- in a
paragenesis with feldspar.
Perovskite occurs as
small anhedral to
subhedral crystals filling interstices between the rock-forming silicates. Perovskite...
-
zoned plagioclase phenocrysts and/or
rounded corroded quartz phenocrysts.
Subhedral hornblende and
elongated biotite grains are present.
Sanidine phenocrysts...
- 278.203 g·mol−1
Color White, grayish,
reddish Crystal habit Anhedral to
subhedral granular Twinning Common Cleavage Perfect [001] good [010] poor [110]...
-
Space group: Fm 3 5
Identification Color Dark grey,
black Crystal habit Subhedral to
anhedral grains Fracture Irregular Luster Metallic Streak Grey Diaphaneity...
-
level of nine for two w****s.
Alforsite occurs as colorless,
minuscule subhedral grains with a
diameter less than 0.05 mm. However, on rare occasions,...
-
Identification Color White with
possible brownish tint
Crystal habit Subhedral platey crystals, lamellar-fibrous,
rarely euhedral prismatic; commonly...
- yellowish,
brownish Crystal habit Granular –
Generally occurs as
anhedral to
subhedral crystals in matrix; m****ive –
Uniformly indistinguishable crystals forming...
- in thin
sections are
disseminated with
crystals that are
euhedral to
subhedral.
Chromite contains Mg,
ferrous iron [Fe(II)], Al and
trace amounts of...
