Hambergite MCQs

 

Hambergite: Interactive MCQ Quiz

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

1. Who was hambergite named after?

Professor Silliman of Yale University
Axel Hamberg, a Swedish mineralogist
Colonel von Prehn
A mineralogist from Sri Lanka

2. Which colors does the book describe for hambergite crystals?

Dark green to black
Pink to red
Blue to violet
Colorless to yellowish white

3. How common is gem-quality hambergite?

Rare
Very common worldwide
Found only as synthetic material
Common only in black crystals

4. Why does the book say hambergite is very fragile?

It has a hardness of only 2
It is always full of cavities
It is brittle and has perfect cleavage
It dissolves in air

5. For whom does the book say hambergite is suitable?

Everyday jewelry wearers
Collectors
Industrial tool makers
Builders using decorative stone

6. What may be seen through the table facet of cut hambergite?

A cat’s-eye line
A six-rayed star
Alternating green and pink bands
Double images of the back facets

7. What causes the double images seen in cut hambergite?

High birefringence
A metallic coating
Color zoning
Strong fluorescence

8. Which locations does the book list for gem-quality hambergite?

Brazil and Norway
Namibia and Zambia
Kashmir in India and Madagascar
England and Germany

9. What composition does the book list for hambergite?

Calcium aluminum hydroxysilicate
Beryllium hydroxyborate
Magnesium aluminum iron borate
Lead sulfate

10. Which crystal structure and hardness does the table list for hambergite?

Trigonal, hardness 7½
Orthorhombic, hardness 3
Monoclinic, hardness 6
Orthorhombic, hardness 7½