Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of quartz is as below...

Endomorph :: Endomorph (n.) A crystal of one species inclosed within one of another, as one of rutile inclosed in quartz..

Hornstone :: Hornstone (n.) A siliceous stone, a variety of quartz, closely resembling flint, but more brittle; -- called also chert..

Schist :: Schist (n.) Any crystalline rock having a foliated structure (see Foliation) and hence admitting of ready division into slabs or slates. The common kinds are mica schist, and hornblendic schist, consisting chiefly of quartz with mica or hornblende and often feldspar..

Garnet :: Garnet (n.) A mineral having many varieties differing in color and in their constituents, but with the same crystallization (isometric), and conforming to the same general chemical formula. The commonest color is red, the luster is vitreous, and the hardness greater than that of quartz. The dodecahedron and trapezohedron are the common forms..

Cat''s-eye :: Cat's-eye (n.) A variety of quartz or chalcedony, exhibiting opalescent reflections from within, like the eye of a cat. The name is given to other gems affording like effects, esp. the chrysoberyl..

Quartzous :: quartzous (a.) Quarzose.

Graduate :: Graduate (v. i.) To pass by degrees; to change gradually; to shade off; as, sandstone which graduates into gneiss; carnelian sometimes graduates into quartz..

Morion :: Morion (n.) A dark variety of smoky quartz.

Quartzite :: Quartzite (n.) Massive quartz occurring as a rock; a metamorphosed sandstone; -- called also quartz rock.

Phenacite :: Phenacite (n.) A glassy colorless mineral occurring in rhombohedral crystals, sometimes used as a gem. It is a silicate of glucina, and receives its name from its deceptive similarity to quartz..

Crocidolite :: Crocidolite (n.) A mineral occuring in silky fibers of a lavender blue color. It is related to hornblende and is essentially a silicate of iron and soda; -- called also blue asbestus. A silicified form, in which the fibers penetrating quartz are changed to oxide of iron, is the yellow brown tiger-eye of the jewelers..

Cairngormstone :: Cairngormstone () A yellow or smoky brown variety of rock crystal, or crystallized quartz, found esp, in the mountain of Cairngorm, in Scotland..

Granite :: Granite (n.) A crystalline, granular rock, consisting of quartz, feldspar, and mica, and usually of a whitish, grayish, or flesh-red color. It differs from gneiss in not having the mica in planes, and therefore in being destitute of a schistose structure..

Sinople :: Sinople (n.) Ferruginous quartz, of a blood-red or brownish red color, sometimes with a tinge of yellow..

Petuntze :: Petuntze (n.) Powdered fledspar, kaolin, or quartz, used in the manufacture of porcelain..

Sagenite :: Sagenite (n.) Acicular rutile occurring in reticulated forms imbedded in quartz.

Flint :: Flint (n.) A massive, somewhat impure variety of quartz, in color usually of a gray to brown or nearly black, breaking with a conchoidal fracture and sharp edge. It is very hard, and strikes fire with steel..

Cacholong :: Cacholong (n.) An opaque or milk-white chalcedony, a variety of quartz; also, a similar variety of opal..

Aventurine :: Aventurine (n.) A variety of translucent quartz, spangled throughout with scales of yellow mica..

Sandstone :: Sandstone (n.) A rock made of sand more or less firmly united. Common or siliceous sandstone consists mainly of quartz sand.

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