Topaz,Calcite Cooprarte
no
nickel
The mineral that can be scratched by a penny is talc. Talc is the softest mineral on the Mohs scale, with a hardness of 1. A penny has a hardness of around 3.5 on the Mohs scale.
No, calcite is harder than a penny and cannot be scratched by it. Calcite has a Mohs hardness of 3, while a penny typically has a hardness of around 3.5 on the Mohs scale.
The mineral that can be scratched by glass but not a penny is calcite. Calcite has a hardness of 3 on the Mohs scale, which is lower than the hardness of glass (5.5) but higher than that of a penny (2.5).
minearls
Yes, sedimentary rocks can often be scratched by a penny, as they typically have a hardness of 3 to 4 on the Mohs scale. A penny, made primarily of copper, has a hardness of about 3.5, allowing it to scratch softer sedimentary rocks like limestone or sandstone. However, harder sedimentary rocks like some shales may resist being scratched by a penny.
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).
topaz
No, gold is a much harder metal than copper, which is found in pennies. Therefore, a penny is not capable of scratching gold.
A penny would scratch minerals with a lower hardness rating such as calcite, gypsum, or talc. Minerals like quartz or topaz would not be scratched by a penny because they are harder than the metal in a penny.
a penny has a hardness of 3 depending on what it is being scratched on.