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- 1.955 g/cm3
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(hydrated sodium calcium borate hydroxide) a.k.a. TV rock, is a mineral occurring in silky white rounded crystalline masses or in parallel fibers. The natural fibers of ulexite conduct light along their long axes, by internal reflection.??? ??
White color; silky luster. Mohs hardness 1–2.5, d 1.96. Usually found as rounded, loosetextured masses of fine crystals.??
Source of borax.??
A natural hydrated borate of sodium and calcium.???? ?? ?? ? ???
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