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novaculite
no·vac·u·lite N0176700 (nō-văk′yə-līt′)n. A very hard, dense, even-textured, silica-bearing sedimentary rock used in whetstones.
[Latin novācula, razor + -ite.]novaculite (nəʊˈvækjʊˌlaɪt) n (Geological Science) a fine-grained dense hard rock containing quartz and feldspar: used as a whetstone[C18: from Latin novācula sharp knife, razor, from novāre to renew]no•vac•u•lite (noʊˈvæk yəˌlaɪt)
n. a very hard sedimentary rock, similar to chert, composed essentially of microcrystalline quartz. [1790–1800; < Latin novācul(a) razor + -ite1] novaculite
novaculite[nə′vak·yə‚līt] (geology) A siliceous sedimentary rock that is dense, hard, even-textured, light-colored, and characterized by dominance of microcrystalline quartz over chalcedony. Also known as razor stone. |