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Which minerals can be easily scratched by a fingernail has cleavage a metallic luster and has a black streak?
Wiki User
∙ 9y ago
Well you see, it's pretty simple. If a fingernail has a hardness of 2.5, and the question is asking what mineral can easily be scratched by a fingernail. Well then it is Graphite. It has a less hardness than your fingernails.
Colby Leffler
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What can scratch gypsum but can be scratched by all other minerals?
The human fingernail can just scratch gypsum, but is softer than all other minerals.
What is a pearl's cleavage?
Cleavage is a plane of atomic weakness in an inorganic mineral. Since pearls are an organic gem, they cannot have cleavage. The fracture surface of a pearl can be described as conchoidal.
What is a minerals cleavage?
Cleavage is the tendency of a mineral to break along smooth planes parallel to zones of weak bonding.
What is the difference between a minerals hardness and streak?
A minerals hardness is the ability to scratch or be scratched by other minerals and streak is the colored powder of a mineral that comes off when being scratched.
What breaks layers because of cleavage?
Cleavage breaks the layers of rock due to poor distribution of minerals within the rocks. The impact of breakage will depend on the types of minerals that are present.
Which mineral can be easily scratched by a fingernail has cleavage a metallic luster and has a black streak?
azurite is one of the minerals that has a light blue streak.
What minerals are soft enough to be scratched by a fingernail?
talc, gypsum
What three minerals can be scratched by a fingernail?
bob fred and bobby
What rock is soft enough to be scratched by a nail?
Rocks that mostly contain minerals like mica, gypsum, and talc can be scratched by a fingernail.
What can scratch gypsum but can be scratched by all other minerals?
The human fingernail can just scratch gypsum, but is softer than all other minerals.
What scientist use to determine a minerals resistance to being scratched?
Moh's hardness scale was used to determine a mineral's resistance to being scratched. The tendency of a mineral to break along smooth flat surfaces is cleavage.
Is marble and fossils are non metallic minerals?
fossils are not metallic minerals. marbles are non metallic minerals.
Does a mineral have crystal form but no cleavage?
All minerals have a crystal form, but not all have cleavage.
What is non- metallic minerals?
Non metallic minerals are minerals that have no shine and crumble easily. Non-metallic minerals are sand, gravel, and stone.
What is metallic miner?
Metallic minerals are minerals that have a metallic luster, making them very shiny. A few metallic minerals are Graphite, Galena, Magnetite, and Pyrite. The mineral Hematite can be metallic or nonmetallic
What are two minerals with cleavage?
Halite and Calcite. Halite has what is known as cubiccleavage, where there is cleavage in three directions at 90 degree angles. Calcite has what is known as rhombohedral cleavage, where there is cleavage in three directions but at 120 and 60 degree angles.
What minerals have only one direction of cleavage?
Mica minerals have only one direction of cleavage. Examples are Muscovite and Biotite.
