Want this question answered?
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.
It's called a metallic luster.
Glassy luster, Metallic luster and Waxy luster.
metallic luster
No. Lustre (or luster) is a description of a mineral's appearance by the way it reflects light. Glassy, metallic, adamantine, and waxy are some examples of words that may be used to describe a mineral's luster.
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
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.
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.
That could be graphite, which is a natural allotrope of the element carbon.
Mineral luster is broadly classified as metallic or non-metallic.
hematite can have both metallic and nonmetallic luster.
A non-metallic mineral such as quartz or calcite.
It's called a metallic luster.
1.metallic 2. non metallic 3.sub metallic
Metallic and non-metallic.
Glassy luster, Metallic luster and Waxy luster.