novaculite


novaculite
   A dense, even-textured, extremely finely grained, siliceous, sedimentary rock recrystallized from chert with microcrystalline quartz dominant over chalcedony (cryptocrystalline quartz). It is hard, white to grayish-black in color, translucent on thin edges, has a dull to waxy luster, and displays smooth conchoidal fracture when broken. Novaculite occurs in the Ouachita Mountains of AR and OK and the Marathon Uplift of TX where it forms erosion resistant ridges. At the Ouachita Mountain type occurrence, novaculite formed by low-grade, thermal metamorphism of bedded chert. This rock serves widely as a whetstone or oilstone.
   Compare: chert.
   SW & GG

Glossary of landform and geologic terms. 2013.

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  • Novaculite — flatirons in the Marathon Uplift[1] Novaculite is a form of chert or flint found in the Ouachita Mountains of Arkansas and Oklahoma and in the Marathon Upl …   Wikipedia

  • Novaculite — No*vac u*lite, n. [L. novacula a sharp knife, razor: cf. F. novaculite.] (Min.) A variety of siliceous slate, of which hones are made; razor stone; Turkey stone; hone stone; whet slate. [1913 Webster] …   The Collaborative International Dictionary of English

  • novaculite — [nō vak′yo͞o līt΄] n. [< L novacula, razor ( < * novare, to scrape, whet < IE * ksnewā < base * kes , to scratch, comb > HARDS) + ITE1] a light colored, hard, extremely fine grained siliceous sedimentary rock, often used as a… …   English World dictionary

  • novaculite — /noh vak yeuh luyt /, n. Petrol. a very hard sedimentary rock, similar to chert, composed essentially of microcrystalline quartz. [1790 1800; < L novacul(a) a sharp knife, razor + ITE1] * * * ▪ rock       very dense, light coloured, even textured …   Universalium

  • novaculite — noun Etymology: Latin novacula razor Date: 1796 a very hard fine grained siliceous rock used for whetstones and possibly of sedimentary origin …   New Collegiate Dictionary

  • Novaculite — Verschiedene Diatomeen, sekundärelektronenmikroskopische Aufnahmen Diatomeenerde aus der Slowakei …   Deutsch Wikipedia

  • novaculite — noun A form of chert, very rich in quartz, that has been used to make whetstones …   Wiktionary

  • novaculite — (no va ku li t ) s. f. Terme de minéralogie. Schiste dont on fait des pierres à rasoir. ÉTYMOLOGIE    Lat. novacula, rasoir …   Dictionnaire de la Langue Française d'Émile Littré

  • novaculite — [nə(ʊ) vakjʊlʌɪt] noun Geology a hard, dense, fine grained siliceous rock resembling chert, with a high content of microcrystalline quartz. Origin C18: from L. novacula razor + ite1 …   English new terms dictionary

  • novaculite — n. Turkey stone, Turkey oil stone, razor stone, whet slate …   New dictionary of synonyms