What mineral is glassy?
At a glance, calcite and quartz look similar.
Both are usually colorless, with a glassy luster..
Which of the following minerals has no cleavage?
Quartz is a mineral that has no cleavage at all.
What mineral is black and splintery to cleavage barely scratches glass?
hornblendeThe kind of mineral is hornblende.
What mineral will scratch glass but not pyrite?
The mineral graphite is often used as Page 19 MINERALS MEGA PACKET A) Dolomite can scratch window glass, but can not be scratched by a fingernail. B) Dolomite can scratch window glass, but can not be scratched by a steel nail.