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The streak can be tested by
rubbing corner off rock on porcelain plate
rubbing a rock of a known hardness aganist a rock of an unknown hardness
the rock breaks along even surfaces that don't follow the atomic arrangement
pyrite
place a drop of acid on the mineral
diamond
impurties
the hardness is 1-2, the color is silver to gray, the streak is black, it's metallic
Quartz can be discolored due to its
rubbing corner off rock on porcelain plate
rubbing a rock of a known hardness aganist a rock of an unknown hardness
the rock breaks along even surfaces that don't follow the atomic arrangement
pyrite
place a drop of acid on the mineral
diamond
impurties
the hardness is 1-2, the color is silver to gray, the streak is black, it's metallic
What is the best way to determine if the mineral sample is calcite or quartz?
rubbing corner off rock on porcelain plate
rubbing a rock of a known hardness aganist a rock of an unknown hardness
the rock breaks along even surfaces that don't follow the atomic arrangement
pyrite
place a drop of acid on the mineral
diamond
impurties
the hardness is 1-2, the color is silver to gray, the streak is black, it's metallic
The hardest mineral is
rubbing corner off rock on porcelain plate
rubbing a rock of a known hardness aganist a rock of an unknown hardness
the rock breaks along even surfaces that don't follow the atomic arrangement
pyrite
place a drop of acid on the mineral
diamond
impurties
the hardness is 1-2, the color is silver to gray, the streak is black, it's metallic
Hardness can be tested by
rubbing corner off rock on porcelain plate
rubbing a rock of a known hardness aganist a rock of an unknown hardness
the rock breaks along even surfaces that don't follow the atomic arrangement
pyrite
place a drop of acid on the mineral
diamond
impurties
the hardness is 1-2, the color is silver to gray, the streak is black, it's metallic
Which mineral reflects nearly all the light off its surface?
rubbing corner off rock on porcelain plate
rubbing a rock of a known hardness aganist a rock of an unknown hardness
the rock breaks along even surfaces that don't follow the atomic arrangement
pyrite
place a drop of acid on the mineral
diamond
impurties
the hardness is 1-2, the color is silver to gray, the streak is black, it's metallic
A rock is graphite is
rubbing corner off rock on porcelain plate
rubbing a rock of a known hardness aganist a rock of an unknown hardness
the rock breaks along even surfaces that don't follow the atomic arrangement
pyrite
place a drop of acid on the mineral
diamond
impurties
the hardness is 1-2, the color is silver to gray, the streak is black, it's metallic
Fracture is when
rubbing corner off rock on porcelain plate
rubbing a rock of a known hardness aganist a rock of an unknown hardness
the rock breaks along even surfaces that don't follow the atomic arrangement
pyrite
place a drop of acid on the mineral
diamond
impurties
the hardness is 1-2, the color is silver to gray, the streak is black, it's metallic
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