The mineral that fits this description is graphite. Graphite is very soft and can be easily scratched by a fingernail. It has a metallic luster and a black streak.
azurite is one of the minerals that has a light blue streak.
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
Lustre Colour Cleavage Hardness Streak Crystal Habit Specific Gravity Magnetism Effervescence Double Refraction Taste Feel
The most commonly known mineral that can be scratched by a fingernail is talc.
The most commonly known mineral that can be scratched with a fingernail is talc.
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.
azurite is one of the minerals that has a light blue streak.
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.
The mineral you are describing is likely graphite. Graphite has a metallic luster and appears gray in color. It is soft enough to be scratched with a fingernail, which distinguishes it from many other minerals. This characteristic makes graphite an important material in applications such as pencils and lubricants.
The mineral that is soft and metallic is talc. Talc is known for its greasy feel and can be easily scratched with a fingernail, making it one of the softer minerals on the Mohs scale.
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
The resistance of a mineral to being scratched
Lustre Colour Cleavage Hardness Streak Crystal Habit Specific Gravity Magnetism Effervescence Double Refraction Taste Feel
The most commonly known mineral that can be scratched by a fingernail is talc.
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.
The most commonly known mineral that can be scratched with a fingernail is talc.
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.