Boracite
The Century Dictionary and Cyclopedia
noun.
A mineral consisting of borate and chlorid of magnesium.
the GNU version of the Collaborative International Dictionary of English
noun.
A mineral of a white or gray color occurring massive and in isometric crystals; in composition it is a magnesium borate with magnesium chloride.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
A mixed
chloride
and
borate
of
magnesium
that occurs as a white to green
crystalline
evaporite
, with the
chemical formula
Mg
3
B
7
O
13
Cl
.
Word Usage
"The sanjak is rich in mineral wealth; silver mines are worked at Balia and boracite mines at"