.

Discerningly Versed - Effective Iterative Learning Quiz Questions - Oxide Minerals II
Discerningly Versed - Effective Iterative Learning


An amorphous form of hydrated silicon dioxide used as a gemstone is

 

Citrine
Onyx
Opal
Carnelian

 Rock crystal is a pure transparent variety of which mineral ?

 

Opal
Corundum
Quartz
Chalcedony
A variety of chalcedony with alternating black and white bands used as a gemstone is

 

Citrine
Onyx
Opal
Carnelian

 Fire opal, used as a gemstone, is what colour ?

 

Green
Orange Red
Yellow
Black
Chryoprase is an apple green variety of which mineral used as a gemstone ?

 

Opal
Corundum
Quartz
Chalcedony

 Sapphire is a blue variety of which oxide mineral ?

 

Spinel
Hematite
Corundum
Opal
Which of these pairs of minerals are oxides and NOT hydroxides ?

 

Chalcedony Quartz
Limonite Manganite
Bauxite Diaspore
Geotite Brucite

 A reddish-yellow variety of chalcedony used as a gemstone is

 

Citrine
Onyx
Opal
Carnelian
Which oxide mineral is the chief source of aluminium ?

 

Gibbsite
Limonite
Brucite
Bauxite

 Known as false topaz, a brownish-yellow variety of quartz and a gemstone is

 

Citrine
Onyx
Opal
Carnelian


.
Discerningly Versed www.dniv.com 2026