twin crystal

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twin crys·tal

two crystals that have grown together along a common face.
References in periodicals archive ?
However, a completely new feature is the added flexibility of single echo mode where twin crystal probes can be used.
Some compounds typically grow only as twin crystals, and were formerly impossible to analyze," says Campana.
More modestly, Andre Gorsatt found, last July, a few smoky gray, pearly-translucent to transparent, twin crystals of dolomite, as thumbnail-size floaters, on the Turbenalp, Binntal, Valais.