its streak is white.
Obsidian typically exhibits a streak that is white to very light brown in color.
2.6g
potassiun feldspar, quartz, plagioclase feldspar,biotite, and amphibole.
They have an obsidian nearby for Catal Huyuk and for Jericho they already have imported obsidians.
The streak of Jade is white.
Perlite does not have a streak color because it is a volcanic glass that does not leave a streak on a streak plate.
The lack of a streak would indicate that the mineral is harder than the streak plate, or the color of the streak is the same as the color of the streak plate.
normally white but may streak other colors if the specimen is stained i dont give a duck
a streak a streak
Streak
Apatite has a white streak.
biotite has a colorless streak