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 mineral compared to the others and the other tests support this mineral as being talc. Mineral 3:Calcite90%This mineral is the only mineral I observed a reaction to the acid test. The active bubbling and fizz along with the hardness of 3 and the coloring and streaking of white makes me believe this mineral is Calcite. Mineral 4:Corondum65%I was a little unsure about this mineral, however the coloring I observed to be as of a pink tone with white streaking with a gravity of 2. 6 and a hardness of 6.
Mineral 5:Quartz75%One of the many white colored with shite streaking according to the lab tests made this a little difficult to be sure if this mineral is Quartz. The hardness test is what convinced me this could be quartz. Mineral 6:Gypsum50%I choose Gypsum based on the gravity test and the hardness. Once again it is one of the many white colored with white streaking. Mineral 7:Graphite95%The coloring of Graphite is Black with brown streaking and although the description of graphite includes light bubbling and fizzing during the acid test I did not observe this reaction therefore I wanted to leave room for being incorrect.
