orthoclase
Any mineral with roughly a hardness of 6 or more on the Mohs scale of mineral hardness could scratch glass, which is roughly 5.5 on the Mohs scale. Some minerals that could scratch glass would be quartz, topaz, corundum, and diamond.
Diamond will scratch anything.
the cleavage for pyrite is cubic
A few minerals that do not scratch glass come to mind . . . talc, asbestos, mica, for instance.
No. Pyrite is a compound composed of iron (a metal) and sulfur (a nonmetal).
no
Any mineral with roughly a hardness of 6 or more on the Mohs scale of mineral hardness could scratch glass, which is roughly 5.5 on the Mohs scale. Some minerals that could scratch glass would be quartz, topaz, corundum, and diamond.
Diamond will scratch anything.
A few minerals that do not scratch glass come to mind . . . talc, asbestos, mica, for instance.
quartz
n
the cleavage for pyrite is cubic
It can be scratched by a diamond, corundum, topaz, and quartz.
No. Pyrite is a compound composed of iron (a metal) and sulfur (a nonmetal).
Pyrite is the mineral whereas a pyrite 'cube' happens to be the habit in which the mineral has crystallised
topaz
No. The hardness of serpentine is 3-4.5, whereas a hardness of at least 7 is needed to scratch glass.