Assertion: calcite's crystal | /r/HasProperty | terminated by obtuse rhombohedron e
Facets:
Source sentences:
text: Depending on the habits of the crystals, certain trivial names have been used, such, for example, as dog-tooth-spar for the crystals of scalenohedral habit, so common in the Derbyshire lead mines and limestone caverns; nail-head-spar for crystals terminated by the obtuse rhombohedron e, which are common in the lead mines of Alston Moor in Cumberland; slate-spar (German Schieferspath) for crystals of tabular habit, and sometimes as thin as paper: canon-spar for crystals of prismatic habit terminated by the basal