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Can hornblende be scratched from a fingernail?
Hornblende is a mineral with a hardness of about 5 to 6 on the Mohs scale, which means it is harder than a fingernail, which has a hardness of about 2.5 to 3. Therefore, hornblende cannot be scratched by a fingernail. Instead, a fingernail would likely be scratched by hornblende if they came into contact.
What mineral has nonmetallic luster is black and can be scratched by a fingernail?
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
What can graphite be scratched by?
Graphite can be scratched by materials that are harder than it, such as diamond and tungsten.
Which mineral on Mohs hardness scale can be scratched by your finger?
Talc (1 on the Mohs Hardness Scale) can be scratched by a fingernail.
Can talc be scratched by a fingernail?
Talc i assigned a hardness of 1 according to the Mohs scale of hardness. This implies that talc has the least hardness and therefore is soft and can be scratched by a fingernail.
Can halite be scratched by a fingernail?
Marginally. Halite has a hardness of 2 to 2.5, about the same as a fingernail.
Can magnetite be scratched by finger nail?
Yes, magnetite is harder than a fingernail and cannot be easily scratched with it. Magnetite has a Mohs hardness of 6, while a fingernail typically has a hardness of around 2.5.
What three minerals can be scratched by a fingernail?
bob fred and bobby
What minerals are soft enough to be scratched by a fingernail?
Minerals that are soft enough to be scratched by a fingernail include gypsum (2 on the Mohs scale), talc (1), and calcite (3).
What mineral can be scratched by a penny but not a fingernail?
Copper sulfide minerals, such as chalcocite and bornite, can be scratched by a penny but not a fingernail. This is due to the Mohs hardness scale, where these minerals have a hardness greater than a penny (3.5) but less than a fingernail (2.5).
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.
Which mineral has the same hardness of a fingernail?
The mineral that has a similar hardness to a fingernail is gypsum. Gypsum has a Mohs hardness of 2, which makes it soft enough to be scratched by a fingernail.
