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


Which of these pairs of minerals are oxides and NOT hydroxides ?

 

Chalcedony Quartz
Limonite Manganite
Bauxite Diaspore
Geotite Brucite

 Sapphire is a blue variety of which oxide mineral ?

 

Spinel
Hematite
Corundum
Opal
An amorphous form of hydrated silicon dioxide used as a gemstone is

 

Citrine
Onyx
Opal
Carnelian

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

 

Citrine
Onyx
Opal
Carnelian
Fire opal, used as a gemstone, is what colour ?

 

Green
Orange Red
Yellow
Black

 Which oxide mineral is the chief source of aluminium ?

 

Gibbsite
Limonite
Brucite
Bauxite
A variety of chalcedony with alternating black and white bands used as a gemstone is

 

Citrine
Onyx
Opal
Carnelian

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

 

Citrine
Onyx
Opal
Carnelian
Chryoprase is an apple green variety of which mineral used as a gemstone ?

 

Opal
Corundum
Quartz
Chalcedony

 Rock crystal is a pure transparent variety of which mineral ?

 

Opal
Corundum
Quartz
Chalcedony


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