PHYSICAL AND CHEMICAL PROPERTIES OF MINERALS

What physical property of minerals is considered the least reliable in identifying minerals?

• Color

• Streak

• Hardness

• Specific gravity

What property of minerals determines the TRUE color of a mineral?

• Color

• Streak

• Hardness

• Specific gravity

Which among the minerals is considered the hardest mineral?

• Gypsum

• Calcite

• Diamond

• Flourite

Which of the following property refers to the breakage that takes place in weak parts of the crystalline structure?

• Cleavage

• Crystal lattice

• Diaphaneity

• Fracture

Which of the following does NOT describe a mineral?

• Naturally occuring

• Has definite composition

• Organic

• Has crystal lattice

A reading eyeglass is made up of some kind of mineral. How will you describe the transparency of the reading eyeglass?

• Transparent

• Transluscent

• Opaque

• None of the above

What class of minerals is considered as the largest and most abundant group?

• Sulphate class

• Silicate class

• Sulphide class

• Oxide class

Stalactites and stalagmites are found in caves. In what class of minerals do they belong?

• Halide class

• Carbonate class

• Oxide class

• Silicate class

Which among the classes of minerals contains phosphorous and is considered an important biological mineral found in the teeth and bones of many animals?

• Native elements

• Sulphide class

• Phosphate class

• Sulphate class

Which class of minerals contains metals and intermetallic elements such as gold silver and copper?

• Silicate class

• Sulphate class

• Native elements

• Carbonate class