Lab 3 - Copy
docx
keyboard_arrow_up
School
Clovis Commuity College *
*We aren’t endorsed by this school
Course
9
Subject
Geology
Date
Dec 6, 2023
Type
docx
Pages
5
Uploaded by DeanJellyfishPerson4936
Complete your responses in a
color other than black or red
.
Part 1: Identifying Unknown Minerals
•
Lay out all of your rocks on a blank sheet of paper and take a photo. Submit your photo
below
.
Insert Photo/Image here:
•
Find your six (6) mineral samples (the other samples are rocks, which are made up of
multiple minerals), then take a photo with each of the minerals named according to the list
below. Submit your photo
below
.
•
Magnetite
•
Pyrite
•
Mica
•
Quartz
•
Feldspar
•
Talc
Insert Photo/Image here:
•
Now that we know what we are working with, make some observations with your samples by
completing the table below for each mineral.
•
What luster do you observe? Is the sample metallic or nonmetallic?
•
Perform a streak test by scratching the sample on the porcelain tile in your Mineral ID
kit. Is the streak provided for that mineral dark or light?
•
Next, scratch your sample along the glass plate in your Mineral ID kit. What is the
hardness of the sample relative to glass - does it scratch glass or not?
•
Observe the edges of your sample. Can it be easily broken by hand? Does the
sample
break with cleavage or fracture? (Note the cleavage angle(s) if given.)
•
Use the attached Mineral Identification Chart (linked in the
Materials
section of
the
Introduction
on Canvas) to see if you chose the correct sample for each mineral.
Were
there any variants between what you observed/tested and what the chart says? Explain.
Type your response here:
•
Use the Mineral Identification Chart to determine which type of mica you have. What
characteristic is key for this identification?
•
Use the Mineral Identification Chart to determine which type of feldspar you have. What
characteristic is key for this identification?
Sample’s
mineral
name
Luster (
Metallic
or Nonmetallic?
)
Streak Color
(
Dark or
Light?
)
Hardness
(does it
scratch
glass?)
Cleavage
or
Fracture?
Type
Key Characteristic(
for identification
purposes
Magnetit
e
Metallic
Dark
Yes
Fracture
n/a
Black and smooth, i
magnetic and easy t
identify.
Pyrite
Metallic
Dark
Yes
Fracture
n/a
Very shiny and look
like clumps of metall
cottage cheese.
Mica
Non-metallic
Light
No
Cleavage
Muscovi
te
Flat and shiny lookin
feels rubbery smoot
and plastic like.
Quartz
Non-Metallic
Light
Yes
Fracture
n/a
White and crystal-lik
Feldspar
Non-Metallic
Light
Yes
Cleavage
Plagiocl
ase
Smooth and light
colored.
Talc
Non-Metallic
Light
Yes
Cleavage
n/a
Very smooth and dus
it has a blueish tint to
•
There are many more minerals in this world than what we could physically obtain for your
kit. To demonstrate this, observe and classify the (12) 2D mineral samples (A) - (L) on
Canvas by completing the table below for each mineral. We
have provided 3D model links
and various videos on the different minerals in
Part 3: Additional Help
in case you get stuck
or just want to dive deeper into studying any of these minerals!
•
What luster do you observe? Is the sample metallic or nonmetallic?
•
Is the streak provided for that mineral dark or light?
•
What is the hardness of the sample relative to glass - does it scratch glass or not?
•
Does the sample break with cleavage or fracture? (Note the relative angle if it is given.)
•
Use the attached Mineral Identification Chart (linked in the
Materials
section of
the
Introduction
) to name the mineral in the last column.
Sample
Number
Luster (
Metallic
or Nonmetallic?
):
Streak Color
(
Dark or
Light?
):
Hardness:
(does it
scratch
Cleavage or
Fracture?
Mineral Name
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
glass?)
A
Non-metallic
Light
Yes
Fracture
Quartz
B
Non-Metallic
Light
No
Cleavage
Biotite
C
Non-Metallic
Light
Yes
Cleavage
K-Feldspar
D
Non-Metallic
Light
Yes
Cleavage
Amphibole (Hornblende)
E
Non-Metallic
Light
Yes
Fracture
Olivine
F
Non-Metallic
Light
No
Cleavage
Muscovite
G
Non-Metallic
Light
Yes
Cleavage
Plagioclase Feldspar
H
Non-Metallic
Light
Yes
Cleavage
Gypsum
I
Metallic
Dark
No
Fracture
Hematite
J
Non-Metallic
Light
No
Cleavage
Calcite
K
Metallic
Dark
Yes
Fracture
Pyrite
L
Non-Metallic
Light
No
Cleavage
Halite
Part 2: Bowen’s Minerals
Using the Bowen’s Reaction Series template on the next page, label each number with the
appropriate
sample letters
from
Part 1 number 4
. Use the same sample letter for both Na and Ca
plagioclase. Also, if a sample was not included in Part A, be sure to list the name of that mineral
instead of the sample letter.
1.
E
2.
K
3.
D
4.
B
5.
G
6.
C
7.
J
8.
F
9.
A