Identifying Minerals
powder that rubs off a mineral
what is streak
a dark colored rock that is low in silica
what is basalt?
a coarse-grained igneous rock composed mostly of quartz
what is granite?
rocks that have their grains arranged in parallel layers
what is foliated?
solid piece that comes from rocks or living things
what is sediment?
light reflected from the surface
what is Luster
Minerals in parts of rock
what is a Rock forming mineral?
a naturally occurring volcanic glass formed as an extrusive igneous rock.
what is obsidian?
forms from other rocks that change by heat and pressure
what is metamorphic rock?
forms when particles of other rocks are pressed and cemented together
what is sedimentary rock?
a scale that ranks ten minerals from softest to hardest
what is mohs hardness scale?
the look and feel of a rocks surface
what is texture?
What is a material formed from oxygen and Silicon that is found in Igneous rocks and affects their color?
what is Silica?
a hard non-foliated metamorphic rock
what is quartzite?
the process of water, wind or ice loosens and carries away fragments of rocks
what is Erosion?
the mass which is over the volume
what is density?
forms when magma hardens beneath earths surface
what is intrusive rock
rock that form below earths surface
what are intrusive rocks?
metamorphic rock composed of recrystallized carbonate minerals
what is marble?
the process of dissolved minerals crystallize and glue particles of sediment together
what is Cementation?
particles of a mineral that line up in a pattern
what is crystal struchure?
used in jewelry
What is gemstone?
igneous rocks that form above earths surface
what are extrusive rocks?
1 example of a foliated metamorphic rock
What is Gneiss?
the process that presses sediments together
what is Compaction?