Minerals Mineral
Minerals Mineral
Macarthur Minerals Limited: Hematite Mineralisation Discovered at Moonshine
VANCOUVER, BRITISH COLUMBIA-- - Macarthur Minerals Limited is pleased to advise that outcropping hematite has returned an average grade of 58.8% Fe from 18 surface rock chip samples for the Moonshine prospects at its Lake Giles Project.
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how does the streaktest,in which a mineral sample is rubbed against a tile,help to identify different minerals?
A. Minerals that leave streaks usually are quartz
B. If the mineral scratches the tile then it is harder than the tile
C. sometimes the streak is a different color that the mineral
D. the streak left by the mineral will reveal the shape of its crystals
HELP WANTED
Of the above choices, (C) is the best answer. If minerals leave
streaks, they are NOT quartz, so choice (A) is out.
Choice B is correct, but doesn't answer the question about how to
identify different minerals. Choice D is totally wrong, so we are left
with choice C, the best answer. As an example, try rubbing pyrite
on the tile. Pyrite is brassy yellow, but leaves a greenish-black
streak. Another example is crocoite, which is red but leaves a
yellow streak, showing that choice C is the best answer.
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