sagenitic

Century Dictionary and Cyclopedia

1. Noting quartz containing acicular crystals of other materials, most commonly rutile, also tourmalin, actinolite, and the like.

GNU Webster's 1913

1. adj. Resembling sagenite; -- applied to quartz when containing acicular crystals of other minerals, most commonly rutile, also tourmaline, actinolite, and the like.