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单词 howlite
释义

howliten.

/ˈhaʊlʌɪt/
Etymology: < the name of Henry How (d. 1879), mineralogist of Nova Scotia, who first described it: see -lite comb. form1.
Mineralogy.
A hydrated calcium borosilicate, Ca2B5SiO9(OH)5, that typically occurs as white nodules forming compact structureless masses resembling unglazed porcelain.
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the world > the earth > minerals > types of mineral > silicates > miscellaneous silicates > [noun] > other silicates of two elements
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1868 J. D. Dana Syst. Mineral. (ed. 5) 598 Howlite. Silicoborocalcite H. How... 1868. Howlite Dana. In small rounded imbedded nodules. Texture compact, without cleavage; also chalk-like or earthy.
1917 Amer. Mineralogist 2 1 Not all fine grained, compact hydrous calcium borate is priceite; a number of such specimens from California localities..have been examined microscopically and all proved to be howlite.
1957 Amer. Mineralogist 42 521 The mineral howlite, H5Ca2SiB5O14, has been recorded from a number of localities in California and elsewhere..and microscopic crystals have been described.., but in general the mineral is massive and very fine granular.
This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2022).
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n.1868
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