Mineralogy Database

Howlite Mineral Data

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General Howlite Information

Help on Chemical  Formula: Chemical Formula: Ca2B5SiO9(OH)5
Help on Composition: Composition: Molecular Weight = 391.32 gm
   Calcium   20.48 %  Ca   28.66 % CaO
   Silicon    7.18 %  Si   15.35 % SiO2
   Boron     13.81 %  B    44.48 % B2O3
   Hydrogen   1.29 %  H    11.51 % H2O
   Oxygen    57.24 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2B5SiO9(OH)5
Help on Environment: Environment: Secondary mineral in arid environments.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1868
Help on Locality: Locality: Tick Canyon, Los Angeles Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Henry How of Nova Scotia when he first described it in 1868.
Help on Name Pronunciation: Name Pronunciation: Howlite Say HOWLITE
Help on Synonym: Synonym: ICSD 15178
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