Olivine is 6.5-7 on the Mohs scale of mineral hardness.
Silvers Cleavage Is Silver Doesn't Split .
Olivine does not contain Gabbro. Gabbro can contain olivine. Usually no more than a few percent.
talc's cleavage is perfect in one direction, basal.
The mineral olivine is (Fe, Mg)2SiO4, or ferromagnesian silicate.
Olivine cleaves. It looks like fracture, but under a magnifying lens you can see the tiny, crystal-like cleavage.
Look at the cleavage, pyroxene has 2 cleavages at 90, olivine generally has none, just lots of fractures
Olivine is a nonmetallic mineral with a hardness on the Mohs Hardness Scale of 7. It has a white streak and its color is pale or dark olive-green to yellow, or brown. It forms short crystals that may resemble sand grains. Also, it has a conchoidal fracture and has no cleavage. It is brittle and has a specific gravity of 3.3 to 3.4.
cleavage....
Galena's cleavage is cubic.
Olivine fractures.
Olivine is 6.5-7 on the Mohs scale of mineral hardness.
Sulfur's cleavage is imperfect.
Its not at the port
Olivine city
Silvers Cleavage Is Silver Doesn't Split .
Cobalt has a cleavage in three directions, forming a cube.