[lәˏʃɑ:tә'liәrait]
[矿]焦石英

[ noun ]
colorless glass made of almost pure silica
<noun.substance>

lechatelierite \lechatelierite\ n.
A naturally occurring colorless glass made of almost pure
silica, and found in fulgurites, which are produced by
lightning striking sand.

Syn: quartz glass, vitreous silica, crystal.
[WordNet 1.5 +PJC]