In the Moh's Scale Flashcards
What mineral(s) is the number 1 on the Mohs scale?
Talc and graphite
What is common in metamorphic rocks and has a soapy or greasy feel?
Talc
What is a form of the mineral carbon and has a metallic luster and a greasy feel?
Graphite
What can be scratched with your fingernail?
Gypsum
What is number 2 on the hardness scale?
Gypsum
What is number 3 on the scale?
Calcite
What cannot be scratched with your fingernail, but can be scratched with a copper coin?
Calcite
What can be found in stalagmites and stalactites that form in caverns?
Calcite
What is also called calcium fluoride and number 4 on the hardness scale?
Fluorite
What is used as compound that causes iron ore to flow more easily during the process of refining the ore?
Fluorite
What is number 5 on the hardness scale?
Apatite
What is used in making fertilizer and is in an acid used to flavor soft drinks?
Apatite
What minerals, in order of increasing hardness, are number 6,7, and 8 on the hardness scale?
Orthoclase, quartz, and topaz
What mineral is usually colorless?
Topaz
What is next to the diamond on the hardness scale?
Corundum
What has a hardness of 9?
Corundum
What is used as an abrasive and as a gem?
Corundum
What is a dull mineral, with a gray, blue, pink, or brown color?
Common corundum
What is a natural mixture of corundum with magnetite and other minerals?
Emery
What is dark gray to black and has a hardness of 7 to 9?
Emery
What is listed as number 10 on the hardness scale and is the hardest of all minerals?
Diamond
