Question

which is known as black ore​

Answer 1

Answer:

magnetite is a rock mineral and one of the main iron ores

Answer 2

Answer:

Magnetite

Explanation:

• It is a mined as an ore of iron and small grains of iron occur in all metamorphic and igneous rocks. Being black and brownish in color and this type of ore has a moho hardness of 6 and leaves a black streak when used.

• Magnetite reacts with the O2 to give hematite and igneous rock consist of magma. Its found in large quantities of sand beaches such as black sands that are found in hong kong and California.