rocks
Possibly Talc
Sphalerite is a mineral that can exhibit a greasy luster when uncut. It is a zinc sulfide mineral that can vary in color and is commonly found in ore deposits.
Graphite
These words indicate the luster of a mineral.
Galena mineral typically appears with a streak color that is gray to black.
The mineral that has a bluish-gray color is called kyanite. It is a silicate mineral that is typically found in metamorphic rocks. Its color can vary from pale to deep blue-gray.
No, mica is not greasy. It is a mineral that is typically dry and powdery in texture, often used in cosmetics and makeup products for its shimmer and light-reflecting properties.
Graphite is a mineral that is dark gray and has a hardness of one on the Mohs scale.
Quartz is a mineral. It has a hardness of 7 on Mohs Scale of Hardness; thus, it scratches glass but it is not scratched by a masonry nail or knife blade. It does not have any cleavage, it only fractures, and it can have conchoidal fracture (similar to glass). It is also a light-colored nonmetallic mineral with a greasy luster. It can be colorless, white, gray, or other colors. Other distinctive mineral proprieties include its hexagonal prisms, pyramidal structure, and that it can be transparent or translucent.
Quartz is a mineral. It has a hardness of 7 on Mohs Scale of Hardness; thus, it scratches glass but it is not scratched by a masonry nail or knife blade. It does not have any cleavage, it only fractures, and it can have conchoidal fracture (similar to glass). It is also a light-colored nonmetallic mineral with a greasy luster. It can be colorless, white, gray, or other colors. Other distinctive mineral proprieties include its hexagonal prisms, pyramidal structure, and that it can be transparent or translucent.
it can be white or gray but the word is STREAK
it can be white or gray but the word is STREAK