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


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

 

Carnelian
Citrine
Onyx
Opal

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

 

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

 

Carnelian
Citrine
Onyx
Opal

 Rock crystal is a pure transparent variety of which mineral ?

 

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

 

Carnelian
Citrine
Onyx
Opal

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

 

Black
Green
Orange Red
Yellow
An amorphous form of hydrated silicon dioxide used as a gemstone is

 

Carnelian
Citrine
Onyx
Opal

 Which oxide mineral is the chief source of aluminium ?

 

Bauxite
Gibbsite
Limonite
Brucite
Sapphire is a blue variety of which oxide mineral ?

 

Opal
Spinel
Hematite
Corundum

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

 

Geotite Brucite
Chalcedony Quartz
Limonite Manganite
Bauxite Diaspore


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Discerningly Versed www.dniv.com 2012