Mineral Identification Worksheet
Part 1: Recording Observations
In the chart below, record your observations of each test for the seven minerals provided. After you have completed all tests, name the minerals in Part 2 of this worksheet. An example of how to fill out the chart is illustrated.
Recorded observations for minerals 1–7
5.1 (very heavy)
Cleavage and fracture
Cleavage fracture fracture cleavage cleavage
Part 2: Naming the Minerals
Name the minerals in the table below. Then, insert a percentage of how certain you are in your identification. Finally, explain your percentage of certainty: What was confusing about this mineral? What other minerals do you think it could be?
Note. Be specific regarding the test you performed and the results, even if you are 100% certain of the mineral’s identification.
Remember, the minerals in the virtual lab include seven of the following: borax, calcite, corundum, graphite, gypsum, orthoclase feldspar, pyrite, quartz, talc, and topaz.
Identification of mineral
Explanation of certainty
I am almost certain this mineral is fluorite, but I am not completely sure. Fluorite and gypsum are both white, shiny, have white streaks, cleave, and show no reaction to acid. However, the specific gravity of this mineral is 3.18, which is higher than gypsum, so I am pretty sure it is fluorite.
Mineral 1: Pyrite
I believe that mineral 1 could be pyrite. There are many similarities with what pyrite are known for. In my testing I noticed a few differences, like the coloring and the hardness was off a little as well.
Mineral 2: Talc
I am almost certain that this mineral is Talc because of the similarities with what talc is known for. The luster can be opinionated to different people. When the mineral was broke there were a few differences of what Talc is known for but im certain this could be talc.
Mineral 3: Calcite
I am almost certain that this mineral is Calcite but there could be some discussion about the luster. When I looked at it I saw a little more pearly that I did see shiny, and calcite is known to be shinny.
Mineral 4: orthoclase Feldspar
I am certain that this mineral is Orthoclase Feldspar. My testing were accurate with what this mineral is known for. This dull light mineral fracture and had no reaction to acid.
Mineral 5: Gypsum
I am almost certain that this mineral could be gypsum. There is a different opinion on the luster as well with the hardness but over all it is a soft mineral. This mineral also has no reaction to acid.
Mineral 6: Borax
I am almost certain that this mineral is Borax. There was no reaction to acid, but the hardness and the gravity can determine on the size of the mineral during testing.
Mineral 7: Graphite