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What is galenas hardness on the mohs scale?
Galena has a hardness of about 2.5 on the Mohs scale of mineral hardness. This means that it is relatively soft and can be easily scratched with a fingernail or a metal object.
How hard is a finger nail on the mohs hardness scale?
It is about 2.5 in the Mohs Hardness Scale.
How hard is talc on a scale of 1 to 10?
Talc has a Mohs hardness scale rating of 1, making it one of the softest minerals. It is easily scratched by harder substances like a fingernail or a copper penny.
What can scratch gypsum but can be scratched by all other minerals?
Talc can scratch gypsum, but can be scratched by all other minerals. Talc is the softest mineral on the Mohs scale, with a hardness of 1, making it easily scratched by minerals with higher hardness values. Gypsum has a Mohs hardness of 2, so talc can leave a mark on it.
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.
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.
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 are 2 minerals that can be scratched by a fingernail?
Quartz (Mohs 7.0) and diamond (Mohs 10,0) are two of many minerals that are harder than copper (Mohs 2.5-3.0).
What are the two minerals that you can scratch with a fingernail?
Talc and gypsum are two minerals that can be scratched with a fingernail due to their low hardness on the Mohs scale.
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 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 other minerals can sulfur be scratched by?
Sulfur is a relatively soft mineral, with a hardness of 2 on the Mohs scale. It can be scratched by minerals with a higher hardness, such as calcite (3 on the Mohs scale) and fluorite (4 on the Mohs scale).
Can halite be scratched by a fingernail?
Marginally. Halite has a hardness of 2 to 2.5, about the same as a fingernail.
Can a fingernail scratch some minerals?
Yes. But only soft ones such as talc (solid form of chalk and baby powder). Generally only minerals below 2 on the hardness scale.
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.
Which mineral can be scratched by a fingernail?
The most commonly known mineral that can be scratched by a fingernail is talc.
What is galenas hardness on the mohs scale?
Galena has a hardness of about 2.5 on the Mohs scale of mineral hardness. This means that it is relatively soft and can be easily scratched with a fingernail or a metal object.
