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


Which oxide mineral is the chief source of aluminium ?

 

Limonite
Brucite
Gibbsite
Bauxite

 Sapphire is a blue variety of which oxide mineral ?

 

Hematite
Corundum
Spinel
Opal
Known as false topaz, a brownish-yellow variety of quartz and a gemstone is

 

Onyx
Opal
Citrine
Carnelian

 Rock crystal is a pure transparent variety of which mineral ?

 

Corundum
Quartz
Opal
Chalcedony
A reddish-yellow variety of chalcedony used as a gemstone is

 

Onyx
Opal
Citrine
Carnelian

 Chryoprase is an apple green variety of which mineral used as a gemstone ?

 

Corundum
Quartz
Opal
Chalcedony
Which of these pairs of minerals are oxides and NOT hydroxides ?

 

Limonite Manganite
Bauxite Diaspore
Chalcedony Quartz
Geotite Brucite

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

 

Orange Red
Yellow
Green
Black
A variety of chalcedony with alternating black and white bands used as a gemstone is

 

Onyx
Opal
Citrine
Carnelian

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

 

Onyx
Opal
Citrine
Carnelian


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Discerningly Versed www.dniv.com 2012