Question

1. fill in the table describing mineral testing:

mineral property	what is it?	how do you test it? or examples (use your judgment for what makes sense to write here.)
streak
luster
hardness

Explanation:

To fill the table, we define each mineral property and its testing method:

• Color: The visual appearance of the mineral. Test by observing the mineral's surface. Example: Gold is yellow.
• Streak: The color of the mineral’s powder when scraped on a streak plate. Test by rubbing the mineral on an unglazed porcelain plate. Example: Hematite has a red-brown streak.
• Luster: How light reflects off the mineral’s surface (e.g., metallic, non - metallic). Test by observing the mineral’s sheen. Example: Pyrite has a metallic luster.
• Hardness: A mineral’s resistance to scratching. Test using the Mohs scale (e.g., talc = 1, diamond = 10) or by scratching with known - hardness objects (e.g., a fingernail ~2.5, copper penny ~3.5). Example: Quartz (hardness 7) scratches glass (hardness ~5.5).

Mineral Property	What is it?	How do you test it? OR Examples
Streak	The color of the mineral’s powdered form	Rub the mineral on an unglazed porcelain streak plate; e.g., hematite has a red - brown streak
Luster	The way light reflects from the mineral’s surface (e.g., metallic, vitreous)	Observe the mineral’s sheen; e.g., pyrite has a metallic luster
Hardness	The mineral’s resistance to being scratched	Use the Mohs scale (1 - 10) or scratch with objects of known hardness (e.g., fingernail, glass); e.g., quartz (7) scratches glass

Answer:

The table is filled as shown above with definitions and testing methods/examples for each mineral property.