The color of a mineral when it is powdered is called the streak of the mineral. Several minerals have a black streak and make it difficult to identify the mineral with the streak test alone. But a red-brown streak is not very common. We would expect to produce a red-brown streak. A) graphite B) hematite EliminateC) magnitite D) pyrite

Hematite

Explanation:

The iron content of the mineral gives it a red hue after it has spent a long time exposed to air and moisture

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

as many times as you want