
1) Industrial mineral 2) Rock used for whetstones 3) Sedimentary rock
Found on
https://www.crosswordclues.com/clue/novaculite

Novaculite is a form of chert or flint found in the Ouachita Mountains of Arkansas and Oklahoma and in the Marathon Uplift of Texas. Novaculite is considered to be highly siliceous sediments and may be a product of the low-grade metamorphism of chert beds. The strata were deposited in the Devonian Period and subjected to uplift and folding during ...
Found on
http://en.wikipedia.org/wiki/Novaculite

• (n.) A variety of siliceous slate, of which hones are made; razor stone; Turkey stone; hone stone; whet slate. • (n.) A variety of siliceous slate, of which hones are made; razor stone; Turkey stone; hone stone; whet slate.
Found on
http://thinkexist.com/dictionary/meaning/novaculite/

very dense, light-coloured, even-textured sedimentary rock, a bedded chert in which microcrystalline silica (silicon dioxide, SiO2) in the form of ...
Found on
http://www.britannica.com/eb/a-z/n/59
No·vac'u·lite noun [ Latin
novacula a sharp knife, razor: confer French
novaculite .]
(Min.) A variety of siliceous slate, of which hones are made; razor stone; Turkey stone; hone stone; whet slate.
Found on
http://www.encyclo.co.uk/webster/N/37

a very hard sedimentary rock, similar to chert, composed essentially of microcrystalline quartz.
Found on
https://www.infoplease.com/dictionary/novaculite
No exact match found.