Question

Question was provided via image upload.

Explanation:

Identify the visual evidence

The first image shows a streak of limonite, which is yellow-brown. The second image shows Mary and Jim's sample streak, which is also yellow-brown. This is a Streak Test used for Mineral Identification.

Compare the streak colors

Both streaks display a matching yellow-brown color on the streak plate.

Formulate the conclusion

Since the streak colors match, we can conclude that Mary and Jim's sample likely contains limonite.

Answer:

I notice that both the streak of the limonite reference and the streak of Mary and Jim's sample are a matching yellow-brown color.

Based on this test, we can conclude that Mary and Jim's rock sample likely contains limonite.