Chapter 2 Classifying Rocks Flashcards
Metamorphic rocks that have their grains arranged in parallel layers or bands are said to be ________.
Foliated
How do geologist classify rock groups?
foliated and nonfoliated
A naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition.
mineral
This means that the mineral cannot form materials that were once part of a living thing.
inorganic
A mineral must be this.
inorganic
The particles of a mineral line up in a pattern that repeats over and over again. This repeating pattern of a mineral’s particles forms a solid called a ______________.
crystal
The color if a mineral’s powder.
streak
The term used to describe how light is reflected from a mineral’s surface.
luster
Formula for calculating density?
Density = mass/volume
The mass in a given space, or mass per unit volume.
density
Used to describe the hardness of minerals
Mohs hardness scale
Hardness can be determined by a ______________.
scratch test
The softest known mineral. It flakes when scratched by a fingernail.
Talc
A fingernail cannot scratch it but a copper penny can.
Calcite
A steel knife can easily scratch this.
Fluorite and Apatite
