Andalusite MCQs

 

Andalusite: Interactive MCQ Quiz

Choose one answer for each question, then select Submit Quiz. Your score and explanations will appear below.

1. Which color range does the book describe for andalusite?

Only colorless and white
Bright blue to violet
Pale yellowish brown, dark bottle green, dark brown, or greenish red
Metallic gray and black only

2. What optical property does the book emphasize for andalusite?

Strong pleochroism
A permanent six-rayed star
A cat’s-eye effect in every crystal
A metallic reflection from the surface

3. Which colors may the same andalusite stone show when turned?

Blue, white, and black
Pink, orange, and purple
Colorless, gray, and brown
Yellow, green, and red

4. What features may large andalusite crystals have?

Rounded crystals with triangular cross-sections
Vertically striated prisms with square cross-sections and pyramidal ends
Flat plates with curved faces
Fibrous masses with metallic luster

5. What forms of andalusite are more usual than large, well-formed crystals?

Transparent cubes and octahedra
Botryoidal green masses
Opaque rodlike aggregates or waterworn pebbles
Thin metallic sheets

6. Which andalusite material is usually cut as gemstones?

Waterworn pebbles
Only the largest crystals
Only opaque rodlike aggregates
Unpolished matrix rock

7. In what geological setting is andalusite usually found?

Lead and silver mines
Limestone caves
Evaporite deposits
Pegmatites

8. Where does the book report andalusite pebbles in gem gravels?

Namibia and Zambia
Sri Lanka and Brazil
England and Germany
Thailand and Myanmar

9. What distinctive feature may appear when chiastolite is cut and polished?

A six-rayed star
Alternating pink and green bands
A cross pattern
A cat’s-eye line

10. Which set of properties matches andalusite in the book’s table?

Orthorhombic, aluminum silicate, hardness 7½
Trigonal, complex borosilicate, hardness 7½
Orthorhombic, calcium carbonate, hardness 3½
Cubic, aluminum oxide, hardness 9