dacryolite
/ˌdækrɪˈɒlaɪt/Definitions
1. noun
A hydrated sodium borate mineral, Na2B4O6·5H2O, that is often found in evaporites and is a source of boron.
“The geologist studied the dacryolite deposits in the ancient lake bed.”
1. noun
A hydrated sodium borate mineral, Na2B4O6·5H2O, that is often found in evaporites and is a source of boron.
“The geologist studied the dacryolite deposits in the ancient lake bed.”