Mineral Worksheet

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In the following chart, record your observations of each test for the seven minerals. 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 follows.

Recorded Observations for Minerals 1-7
TestsExampleMineral 1Mineral 2Mineral 3Mineral 4Mineral 5Mineral 6Mineral 7 ColorWhiteGoldGreenWhitePinkWhiteWhiteBlack
StreakWhiteBlackWhiteWhiteWhiteWhiteWhiteBrown
LusterShinyShiny specsShiny SpecsDullDullShinyShinyShiny Specific Gravity3.185.102.82.72.62.652.42.2
Cleavage & FractureCleavageFractureFractureCleavageFractureFractureCleavageCleavage Hardness463366.1-1031-2.9
AcidNo ReactionNo ReactionNo ReactionLots of bubbles Active FizzNo ReactionNo ReactionNo ReactionNo reaction

Part 2: Naming the Minerals

Name the minerals in the following table. 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? Remember, the minerals include seven of the following: borax, calcite, corundum, graphite, gypsum, orthoclase feldspar, pyrite, quartz, talc, and topaz.

Identification of MineralPercent CertainExplanation of Certainty Example: Fluorite80% certainI 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: Pyrite85%I am pretty sure this mineral is Pyrite. The main color was hard to determine however a combination of the streak test and the other attributes such as the gravity of 5.10 makes me believe this is correct. Mineral 2: Talc85%I am quite sure this mineral is Talc. The green and white color makes it a unique...
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