GEO 101 CSUSB Castillo Exam 2
What is a mineral? - ✔✔
1. naturally occurring
2. inorganic (no C-H bonds)
3. solid
4. with a definite chemical composition, and
5. an orderly internal atomic arrangement
Which minera
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GEO 101 CSUSB Castillo Exam 2
What is a mineral? - ✔✔
1. naturally occurring
2. inorganic (no C-H bonds)
3. solid
4. with a definite chemical composition, and
5. an orderly internal atomic arrangement
Which mineral(s) react with acid? - ✔✔calcite
Which mineral(s) are magnetic - ✔✔magnetite
Which mineral(s) have striations? - ✔✔pyrite, feldspar, & quartz
Name a mineral that has a high density - ✔✔iridium, platinum, & lead
What is the difference between cleavage and crystal form? - ✔✔Cleavage - the tendency of
minerals to break along planes of weak bonds.
Crystal form
When there is enough space for crystals to grow freely, then the external form of the crystal
reflects the internal orderly arrangement of atoms repeated throughout the solid
What is the silica tetrahedron? - ✔✔Si and O pack efficiently to form a tetrahedron, with 1 Si in
the middle and 4 O around it
Which silicate minerals have a structure made of isolated silica tetrahedra? - ✔✔olivine
Which silicate minerals have a structure made of single chains silica tetrahedra? - ✔✔pyroxene
mineral group Ex. augite
Which silicate minerals have a structure made of double chains of silica tetrahedra? -
✔✔amphibole group Ex. hornblende
Which silicate minerals have a structure made of sheets of silica tetrahedra? - ✔✔biotite &
muscotive
Which silicate minerals have a structure made of a 3-dimensional framework of silica tetrahedra?
- ✔✔orthoclase, plagioclase, & quartz
Which silicate minerals are considered mafic? Which are felsic? - ✔✔olivine, amphibole, biotite
Name the three different types of particles that make up atoms. - ✔✔Protons, neutrons, and
electrons
Which particles are found in the nucleus? - ✔✔protons and neutrons
Which particles have a positive electric charge? Negative charge? Are electrically neutral? -
✔✔Protons: positive charge
Neutrons: no charge (electrically neutral)
Electrons: negative charge
What is the difference between a rock and a min
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