pegmatite

/ˈpɛɡməˌtaɪt/ /ˈpɛɡmətˌaɪt/

Meanings

noun

A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

Examples :

"The geology student identified the large, interlocking crystals of feldspar and quartz in the sample, confirming it was a piece of pegmatite. "

Related Words

confirming verb

/kənˈfɜːrmɪŋ/ /kəmˈfɜːrmɪŋ/

To strengthen; to make firm or resolute.

"The coach was confirming the players' dedication by making them practice harder. "

primarily adverb

/pɹaɪˈmɛɹəli/

(focus) Of a primary or central nature, first and foremost

"My brother is primarily a student; he spends most of his time studying. "

identified verb

/aɪˈdɛn.tɪ.faɪd/

To establish the identity of someone or something.

"The police identified the thief using security camera footage. "

composed verb

/kəmˈpəʊzd/ /kəmˈpoʊzd/

To make something by merging parts.

"The editor composed a historical journal from many individual letters."

coarsely adverb

/ˈkɔːrsli/ /ˈkoʊrsli/

In a coarse manner

"He spoke coarsely to the waiter, demanding immediate service. "

feldspar noun

/ˈfɛldˌspɑr/ /ˈfɛldˌspɑːr/

Any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust. The feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium. Feldspars are the principal constituents of igneous and plutonic rocks.

"Many countertops are made with granite, which contains feldspar, giving them their speckled appearance. "

muscovite noun

/ˈmʌskəˌvaɪt/ /ˈmʌskəˌvɪt/

A pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula KAl2(Si3Al)O10(OH,F)2; used as an electrical insulator etc.

"The electrical components in the old radio were insulated with thin sheets of muscovite. "

crystals noun

/ˈkɹɪstəlz/

A solid composed of an array of atoms or molecules possessing long-range order and arranged in a pattern which is periodic in three dimensions.

"The sugar in the candy formed tiny, sparkling crystals. "

crystalline noun

/ˈkɹɪst.əl.aɪn/

Any crystalline substance.

"The jeweler carefully inspected each crystalline before setting it in the ring. "

interlocking verb

/ˌɪntərˈlɑkɪŋ/ /ˌɪnɾərˈlɑkɪŋ/

To fit or clasp together securely.

"The puzzle pieces interlocking perfectly showed a beautiful picture. "

normally adverb

/ˈnɔːrməli/ /ˈnɔrməli/

Under normal conditions or circumstances; usually; most of the time

"My brother normally gets up early for school. "

plutonic adjective

/pluːˈtɒnɪk/ /pluˈtɑnɪk/

Of or relating to Pluto, the Greek and Roman god of the underworld; demonic, infernal.

"The abandoned house on the hill had a plutonic atmosphere, filled with shadows and an unsettling feeling of dread. "