Question

Exhibit 2: Anthracite

You do the following tests and find
these results:
Streak: black streak
Magnetic:no
Float/Sink: sinks
Mass: 12.5 g
Reaction to HCL: no reaction
Is this Anthracite?

Answer 1

[AI-generated answer — Bot GPT 3.5]

Yes, based on the results of the tests (black streak, sinks, no reaction to HCL), it is likely that this sample is Anthracite. Additionally, Anthracite is a dense, hard coal with a high carbon content, which matches the characteristics observed in the test results.

Answer 2

2b. Is this a rock or mineral?

Answer 3

[AI-generated answer — Bot GPT 3.5]

Anthracite is a type of coal, which is a rock rather than a mineral. Coal is a combustible sedimentary rock composed primarily of carbon along with varying amounts of other elements, such as hydrogen, sulfur, oxygen, and nitrogen. Therefore, Anthracite is classified as a rock.