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Howlite
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<p>Howlite, a calcium borosilicate hydroxide (<a href="/facts/Calcium/hf252CC0">Ca</a>2<a href="/facts/Boron/Pmwgd7Mf">B</a>5<a href="/facts/Silicon/cgWx0hdr">Si</a><a href="/facts/Oxygen/acyn6o8r">O</a>9(O<a href="/facts/Hydrogen/BoYHjl0J">H</a>)5), is a <a href="/facts/Borate_mineral/dWx4jogd">borate mineral</a> found in <a href="/facts/Evaporite/vNW8fcEy">evaporite</a> deposits. </p>