A field name for a medium- to coarse-grained granoblastic metamorphic rock
with little or no foliation or lineation. AGI
An artificial stone of crushed granite and cement. Webster 3rd
a. An irregular microscopic intergrowth of quartz and alkali feldspar.
AGI
b. A fine-grained granitic rock having a micrographic texture. AGI
c. A porphyritic rock of granitic composition characterized by a
crystalline-granular groundmass. CF:felsophyre; vitrophyre. AGI
Of or pertaining to granophyre.
Eng. A tract of land leased or ceded for mining purposes.
A monoclinic mineral, NaCa(V5+ ,V4+ )6 O16
.4H2 O ; in silky, pearly, or subadamantine fibrous aggregates
coating fractures or forming thin seams in sandstone or limestone; near
Grants, NM, and in Montrose County, CO.
Said of the texture of a rock that consists of mineral grains of approx.
equal size. The term may be applied to sedimentary rocks, e.g.,
sandstones, but is esp. used to describe holocrystalline igneous rocks
whose major-phase grain size ranges from 2 to 10 mm. The syn. granoblastic
is used for metamorphic rocks. AGI
A compact, homogeneous, hard-to-soft chert, common in insoluble residues,
composed of distinguishable and relatively uniform-sized grains,
characterized by an uneven or rough fracture surface and by a dull to
glimmering luster; it may appear saccharoidal.
See also:granulated chert
The quality, state, or property of being granular; specif. one of the
component factors of the texture of a crystalline rock, including both
grain size and grain-size distribution. AGI
A rock texture resulting from the aggregation of mineral grains of approx.
equal size. The term may be applied to a sedimentary or metamorphic rock,
but is esp. used to describe an equigranular, holocrystalline igneous rock
whose particles range in diameter from 0.05 to 10 mm.
See also:granitic
This type of tonstein consists predominately of kaolinite grains of
lighter or darker shades, often surrounded by collinite. These grains show
a cryptocrystalline to finely crystalline structure; the cryptocrystalline
material is isotropic. Syn:Graupen tonstein
The glassy, granular material formed when molten blast-furnace slag is
rapidly chilled, as by immersion in water. ASTM
A type of granular chert composed of rough, irregular grains or granules
tightly or loosely held in small masses or fragments.
See also:granular chert
Molten slag broken up into granules and quick quenches. Three general
methods of granulation are: (1) running the molten slag into a pit of
water; (2) using a jet of high-pressure water to breakup the stream of
molten slag as it falls into the pit; and (3) using a mechanical revolving
device with relatively small amounts of water. See also:slag
Camp
Steel made from pig iron by a process in which the first step is the
granulation of the iron.
A device for reducing metal or slag in a liquid form to fine grain.
Fay
The act or process of being formed into grains, granules, or other small
particles; specif. the crushing of a rock under such conditions that no
visible openings result. Also, the state or condition of being granulated.
AGI
a. A rock breaker which converts large stone into small aggregate.
Hammond
b. A machine that produces body raw material in the form of grains with a
minimum of fines. ACSG, 2
a. A rock fragment larger than a very coarse sand grain and smaller than a
pebble, having a diameter in the range of 2 to 4 mm. The term "very fine
pebble" has been used as a syn. AGI
b. A little grain or small particle, such as one of a number of the
generally round or oval, nonclastic (precipitated), internally
structureless grains of glauconite or other iron silicate in iron
formation; a pseudo-oolith. AGI
A texture of iron formation in which precipitated or nonclastic granules
are separated by a fine-grained matrix. AGI
a. A metamorphic rock consisting of even-sized, interlocking mineral
grains less than 10% of which have any obvious preferred orientation.
AGI
b. A relatively coarse, granular rock formed at high pressures and
temperatures, which may exhibit a crude gneissic structure due to the
parallelism of flat lenses of quartz and/or feldspar. The texture is
typically granuloblastic. AGI