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Pearl, Amber, and Coal are minerals - explain your answer
False - these are all organic
How many basic crystal shapes are there? Name 3
6 - Cubic, Hexagonal, Monoclinic, Tetragonal, Orthorhombic, Triclinic
All minerals have a crystalline structure, so why are only some visible on the outside?
It depends on the space available for the atoms to arrange. If there is a lot of space crystals will be on the outside
What property describes the way a mineral reflects light? Give the 2 main groups.
Luster - Metallic and NonMetallic
What property refers to how a mineral breaks?
Cleavage and Fracture
The color left behind when a mineral is rubbed against an unglazed porcelain plate
Streak
What is the equation for Density?
Mass divided by Volume
Name the two mienrals on Moh's Hardness scale that you could scratch with your fingernail
Gypsum and Talc
What are two minerals on the Moh's scale that could scratch Feldspar?
Quartz, Topaz, Corundum, Diamond
What are the two minerals on Moh's scale that are harder than a copper penny, but softer than glass?
Fluorite and Apatite
Give me one gemstone that is formed from each of these minerlals. Quartz, Beryl, and Corundum
Quartz = Amethyst & Citrine; Beryl = Aquamarine & Emerald; Corundum = Ruby & Sapphire
Name one mineral when in its pure form is also considered a gemstone.
Diamond, Topaz, or Turquoise
Which mineral is used in clocks and watches?
Quartz
Which mineral is used in drywall?
Gypsum
Name 1 of the 3 minerals that is used in iron ore.
Magnetite, Hematite, and Limonite
Mineral used in Lead Ore
Galena
