Calcite MCQs

 

Calcite: Interactive MCQ Quiz

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

1. What does the book identify as a principal component of limestone and marble?

Phenakite
Calcite
Corundum
Beryl

2. Calcite is a principal component of most which cave formations?

Sand dunes and beaches
Lava tubes and basalt columns
Glaciers and icebergs
Stalactites and stalagmites

3. Which crystal form of calcite does the book describe?

Large, transparent, colorless, complex crystals
Only tiny opaque cubes
Only rounded pebbles
Thin metallic plates

4. Why does the book say calcite is faceted only for collectors?

It is too rare to cut
Its crystals are always opaque
It is soft
It has no crystal faces

5. What uses does the book mention for marble and brown, banded cave calcite?

Electrical wiring and glassmaking
Decoration and carving
Fuel and fertilizer only
Making steel tools

6. Which marble does the book single out as a fine-quality Italian marble?

Montana marble
Queensland marble
Iceland marble
Carrara marble

7. What name does the book give to transparent, colorless calcite rhombs?

Iceland spar
Oriental topaz
Geuda
Diamantite

8. What effect does the book say may be shown by white fibrous calcite cut en cabochon?

A six-rayed star
Color change
Cat’s-eye effect
A play of rainbow colors

9. Where does the book report pink and green calcite crystals?

Thailand, Myanmar, and Sri Lanka
The USA, Germany, and England
Brazil, the Urals, and Namibia
Australia, Iceland, and Canada

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

Cubic, silica, hardness 7
Trigonal, aluminum oxide, hardness 9
Hexagonal, beryllium silicate, hardness 7½
Trigonal, calcium carbonate, hardness 3