Porphyritic granite
Granite Gran"ite (gr[a^]n"[i^]t), n. [It. granito granite, adj., grainy, p. p. of granire to make grainy, fr. L. granum grain; cf. F. granit. See {Grain}.] (Geol.) 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. [1913 Webster]

Note: Varieties containing hornblende are common. See also the {Note} under {Mica}. [1913 Webster]

{Gneissoid granite}, granite in which the mica has traces of a regular arrangement.

{Graphic granite}, granite consisting of quartz and feldspar without mica, and having the quartz crystals so arranged in the transverse section like oriental characters.

{Porphyritic granite}, granite containing feldspar in distinct crystals.

{Hornblende granite}, or

{Syenitic granite}, granite containing hornblende as well as mica, or, according to some authorities hornblende replacing the mica.

{Granite ware}. (a) A kind of stoneware. (b) A Kind of ironware, coated with an enamel resembling granite. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Granite — Gran ite (gr[a^]n [i^]t), n. [It. granito granite, adj., grainy, p. p. of granire to make grainy, fr. L. granum grain; cf. F. granit. See {Grain}.] (Geol.) A crystalline, granular rock, consisting of quartz, feldspar, and mica, and usually of a… …   The Collaborative International Dictionary of English

  • Granite ware — Granite Gran ite (gr[a^]n [i^]t), n. [It. granito granite, adj., grainy, p. p. of granire to make grainy, fr. L. granum grain; cf. F. granit. See {Grain}.] (Geol.) A crystalline, granular rock, consisting of quartz, feldspar, and mica, and… …   The Collaborative International Dictionary of English

  • Granite — For other uses, see Granite (disambiguation). Granite Igneous Rock Granite containing potassium feldspar, plagioclase feldspar, quartz, and biotite and/or amphibole Composi …   Wikipedia

  • Gneissoid granite — Granite Gran ite (gr[a^]n [i^]t), n. [It. granito granite, adj., grainy, p. p. of granire to make grainy, fr. L. granum grain; cf. F. granit. See {Grain}.] (Geol.) A crystalline, granular rock, consisting of quartz, feldspar, and mica, and… …   The Collaborative International Dictionary of English

  • Graphic granite — Granite Gran ite (gr[a^]n [i^]t), n. [It. granito granite, adj., grainy, p. p. of granire to make grainy, fr. L. granum grain; cf. F. granit. See {Grain}.] (Geol.) A crystalline, granular rock, consisting of quartz, feldspar, and mica, and… …   The Collaborative International Dictionary of English

  • Hornblende granite — Granite Gran ite (gr[a^]n [i^]t), n. [It. granito granite, adj., grainy, p. p. of granire to make grainy, fr. L. granum grain; cf. F. granit. See {Grain}.] (Geol.) A crystalline, granular rock, consisting of quartz, feldspar, and mica, and… …   The Collaborative International Dictionary of English

  • Syenitic granite — Granite Gran ite (gr[a^]n [i^]t), n. [It. granito granite, adj., grainy, p. p. of granire to make grainy, fr. L. granum grain; cf. F. granit. See {Grain}.] (Geol.) A crystalline, granular rock, consisting of quartz, feldspar, and mica, and… …   The Collaborative International Dictionary of English

  • Conway granite — is a typically pink mineral rich igneous (or mesoperthitic) biotite granite.[1] It is amphibole free and of coarse particle size (with portions of the rock fine grained or porphyritic).[1] Geologist Edward Hitchcock named the granite in 1877… …   Wikipedia

  • Felsic — is a term used in geology to refer to silicate minerals, magma, and rocks which are enriched in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium. The term combines the words feldspar and silica. Felsic minerals are… …   Wikipedia

  • Mount Pleasant Caldera — Elevation approx. 248 m (814 ft) Listing List of volcanoes in Canada …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”