Question

select the false statement about the streak of a mineral:

the streak color of a mineral is the true color of the mineral and can be used for identification
the streak is always the same color as the mineral you see
an unglazed porcelain tile is used to test a minerals streak
the streak is the powder form of the mineral

Explanation:

• The streak of a mineral is the color of its powder when scraped on an unglazed porcelain tile (used for testing). It can be different from the mineral's apparent color (e.g., hematite may look silvery - gray but has a reddish - brown streak). So, the statement that "the streak is always the same color as the mineral you see" is false.
• The first statement is true as streak color (powder form) can be a key identification feature.
• The third statement is true as an unglazed porcelain tile is the standard tool for streak testing.
• The fourth statement is true as streak is indeed the powder form of the mineral.

Answer:

The streak is always the same color as the mineral you see.