[kahy-as-tl-ahyt] 
| a variety of the mineral andalusite having cruciform carbonaceous inclusions. |
| chi·as·to·lite (kī-ās'tə-līt') n. A mineral variety of andalusite with carbonaceous impurities regularly arranged along the longer axis of the crystal. [From Greek khīastos, crossed, past participle of khīazein, to mark with an X; see chiasma.] |
tlˌaɪt