Sizes of anthracite smaller than barley. Jones, 1
Variant of anthracosilicosis. Webster 3rd
a. A highly graphitic coal. One specimen contained 97.7% fixed carbon.
AGI
b. Anthracitelike asphaltic material occurring in veins in Precambrian
slate of the Sudbury district, ON, Can. AGI
c. Probably fragmentary coalified wood.
The vitreous appearing components of coal, which in thin section are shown
to have been derived from the woody tissues of plants--such as stems,
limbs, branches, twigs, roots, including both wood and cortex--changed and
broken up into fragments of greatly varying sizes through biological
decomposition and weathering during the peat stage, and later flattened
and transformed into coal through the coalification process, but still
present as definite units. AGI
A bright coal (composed of anthraxylon and attritus in which the
translucent cell-wall degradation matter or translucent humic matter
predominates) in which the ratio of anthraxylon to attritus is from 3:1 to
1:1. CF:attrital coal
A cushioning device to reduce the impact of coal in motion against objects
with which it may come into contact, with a view to avoiding fracture of
the coal. BS, 5
a. Pertaining to an anticline. CF:synclinal
b. Inclining in opposite directions. Having or relating to a fold in which
the sides dip from a common line or crest. Of or pertaining to an
anticline. The opposite of synclinal. Webster 3rd
c. The crest of an anticlinal roll may be the apex of a vein. Fay
d. Said of strata assuming an arch-shaped form. Gordon
a. The medial line of an upfolded structure, from which the strata dip on
either side.
b. If a range of hills or a valley is composed of strata that on the two
sides dip in opposite directions, the imaginary line that lies between
them and toward which the strata on each side rise is called an anticlinal
axis. See also:axis
An upwardly convex flexure in which one limb dips gently toward the apex
and the other limb dips more steeply away from it. CF:unicline;
monocline. AGI
A mountain whose geologic structure is that of an anticline.
CF:synclinal mountain
A valley that follows an anticlinal axis. The term was used as early as
1862 by C.H. Hitchcock. CF:synclinal valley
a. A fold, generally convex upward, whose core contains the
stratigraphically older rocks. Ant. syncline. See also:antiform
AGI
b. Applied to strata that dip in opposite directions from a common ridge
or axis, like the roof of a house; the structure is termed an anticline or
saddleback. AGI
c. In this type of fold (anticline) the sides or limbs of the fold
typically slope away from the plane of the axis of either side. Every
anticlinal axis pitches in two directions; i.e., toward the two ends of
the fold. AGI
A series of anticlines and synclines, so grouped that taken together they
have the general outline of an arch; opposite of synclinorium.
Webster 3rd
Spontaneous magnetic orientation of atoms with equal magnetic moments
aligned in opposite directions. Van Vlack
A state where d electrons are ordered in an antiparallel array, giving
materials small positive values for magnetic susceptibility and weak
attraction to an external magnetic field. CF:ferrimagnetism;
ferromagnetism; superexchange.
A fold whose limbs close upward in strata for which the stratigraphic
sequence is not known. CF:anticline
A bearing consisting of an inner and outer ring, separated by balls or
rollers held in position by a cage. Nichols, 1
A monoclinic mineral, (Mg,Fe)3 Si2 O5 (OH)4 ;
kaolinite-serpentine group; polymorphous with clinochrysotile, lizardite,
orthochrysotile, parachrysotile; greasy variegated green; used as an
ornamental stone. See also:baltimorite
Designating the pole (end) of a pyroelectric crystal that is negative
while the crystal is being heated and positive as it cools.
CF:analogous
See:transformist
a. A salt or ester of antimonic acid; a compound containing the radical
SbO4-3 , SbO3-1 , or Sb2 O (sub 7)
-4 (diantimonate) in which antimony has a +5 valence. AGI
b. A salt containing pentavalent antimony and oxygen in the anion.
Webster 3rd
c. A mineral characterized by inclusion of antimony and oxygen; e.g.,
swedenborgite, NaBe4 SbO7 .