Andradite Garnet MCQs

 

Andradite Garnet: 10 Interactive MCQs

Choose one answer for each question, then select Submit Quiz. Incorrect answers include a clear explanation based on the book.

1. What composition does the book list for andradite garnet?

Calcium aluminum silicate Calcium iron silicate Magnesium aluminum silicate Iron aluminum silicate

2. What hardness does the book give for andradite garnet?

4 10 6½ 7½

3. Which garnets are grouped as andradite in the book?

Garnets containing titanium and manganese Garnets containing only copper and silver Garnets containing carbon and graphite Garnets containing only magnesium and aluminum

4. Which variety is described as the most valuable andradite garnet?

Melanite Topazolite Hessonite Demantoid

5. What does the book say gives demantoid its emerald-green color?

Iron Chromium Copper Silver

6. What feature of demantoid is described as higher than diamond’s?

Hardness Density Dispersion Cleavage

7. What are the “horsetail” inclusions in demantoid?

Fine, hairlike asbestos fibers Rounded crystals of garnet Bubbles formed in glass Needlelike crystals of rutile only

8. Which description matches topazolite?

A black variety that may also be dark red A green variety found only as large crystals A colorless variety with perfect cleavage The yellow variety, ranging from pale to dark yellow, with only small crystals found

9. How does the book describe melanite’s color?

Always emerald green Generally black, but sometimes dark red Pale yellow to dark yellow Colorless to pink

10. Where does the book say the best demantoid is found?

In Sri Lanka’s gem gravels In Kenya’s volcanic rocks In the Urals in Russia, associated with gold-bearing sands and metamorphic rocks In Mexico’s massive metamorphic deposits