Monoclinic

The latter four minerals are polymorphs of quartz, meaning that they have the same chemical composition (silica), but different crystalline forms (tetragonal or monoclinic). ❋ Unknown (2008)

The stacking of the tetrahedral and octahedral sheets in the chrysotile structure has been shown to yield three types of chrysotile fibers: clino-chrysotile: monoclinic stacking of the layers, x parallel to fiber axis, most abundant formortho-chrysotile: orthorhombic stacking of the layers, x parallel to fiber axispara-chrysotile: two layer structure, 180° rotation of two-layer structures, y parallel to fiber axis ❋ Unknown (2007)

The crystals are monoclinic, P2I, with two molecules in the unit cell, and X-ray photographs, taken of them with copper Ka-radiation show very markedly the effects of anomalous dispersion ❋ Unknown (1964)

This insulin hexamer corresponds with the unit cell in the rhombohedral crystals first investigated and is the asymmetric unit in the monoclinic form which appears in the presence of phenol. ❋ Unknown (1964)

Having determined the identity in chemical composition of the crystals, it was thought that there might be a difference of form of the crystals in the various plants, from the fact that calcium oxalate crystallizes both in the tetragonal and the monoclinic systems. ❋ Various (N/A)

Heat is set free when monoclinic sulphur changes into rhombic. ❋ William McPherson (N/A)

Above this temperature the rhombic changes into monoclinic; at lower temperatures the monoclinic changes into rhombic. ❋ William McPherson (N/A)

The two varieties differ also in density and in melting point, the monoclinic sulphur melting at 120°. ❋ William McPherson (N/A)

To prepare the pure base a very concentrated solution of this pure hydrochlorate is treated with an excess of a very concentrated solution of caustic soda, and pieces of caustic potash are added, whereupon the free alkaloid separates out at first as a colorless resinous stringy mass, which, however, upon standing, turns crystalline, forming monoclinic crystals similar to tartaric acid or glycocol. ❋ Various (N/A)

Crystals of azurite belong to the monoclinic system; they have ❋ Various (N/A)

It crystallizes in monoclinic prisms of composition ❋ Various (N/A)

Those in a number of systems are polymorphous, and of these sulphur may be taken as an example, since it possesses thirty or more modifications of its crystalline structure, though some authorities eliminate nearly all these, and, since it is most frequently in either the 4th (rhombic) or the 5th (monoclinic) systems, consider it as an example of dimorphism, rather than polymorphism. ❋ John Mastin (N/A)

Calcium metasilicate, CaSiO_3, occurs in nature as monoclinic crystals known as tabular spar or wollastonite; it may be prepared artificially from solutions of calcium chloride and sodium silicate. ❋ Various (N/A)

~ Sulphur occurs in two crystalline forms, namely, rhombic sulphur and monoclinic sulphur. ❋ William McPherson (N/A)

The mineral brushite, CaHPO_4·2H_2O, which is isomorphous with the acid arsenate pharmacolite, CaHAsO_4·2H_2O, is an acid phosphate, and assumes monoclinic forms. ❋ Various (N/A)

The rhombic crystals that characterize sulphur at ordinary temperatures and pressures, give place to monoclinic crystals at 95.5 degrees C. Sulphur thus exists with two crystalline forms whose stability depends directly upon the temperature. ❋ Anonymous (N/A)

It crystallizes in the monoclinic system, and separates from its aqueous solution as Ba (BrO_3) _2 · H_2O. ❋ Various (N/A)

_Calcium nitrate_, Ca (NO_3) _2·4H_2O, is a highly deliquescent salt, [v. 04 p. 0972] crystallizing in monoclinic prisms, and occurring in various natural waters, as an efflorescence in limestone caverns, and in the neighbourhood of decaying nitrogenous organic matter. ❋ Various (N/A)

The fifth, the monoclinic -- or clinorhombic, monosymmetric, or oblique -- system, has also three axes, all of them unequal. ❋ John Mastin (N/A)