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Quiz about minerals


If you want test your knowledge in minerals here you have got the best possibility.



1.) Who many per cent of gold bars are gold?
99.99 %
90 %
80 %
70 %


2.) Which are the most expensive precious stones of the world?
diamonds
emeralds
rubies
sapphire


3.) In which of these countries do we find the most jade (nephrit)?
China
Australia
Canada
USA


4.) Which mineral is the hardest?
onyx
opal
rock cristal
diamond


5.) Which color has got the amethyst?
red
violet
yellow
green


6.) What is the chemical formula of celestine?
CaSO4
SrSO4
CaF2
SiO2


7.) What is the hardness of fluorite?
2
4
7
9


8.) Whow many per cent of sterling silver are silver?
90 %
92.5 %
95 %
99.99 %


9.) In which crystal system do emerald and aquamarine crystallize?
trigonal
rhombical
tetragonal
hexagonal


10.) To which mineral class does baryte belong?
nitrates
sulfates
tungstenates
silicates


11.) Which country hauled the most rock crystals?
Russia
China
Brazil
South Africa


12.) Which of these stones is not a quartz?
amethyst
citrin
rock cristal
sapphire


13.) Of how many carats does a gram consists?
2 carats
3 carats
5 carats
6 carats


14.) Which of these minerals is not a halide?
topaz
salmiac
rock salt
cryolite


15.) To which mineral group do kunzite and hiddenite belong?
corundum
quartz
spodumene
beryl


You have reached of 15 points.

Author and Webmaster: Lukas Czarnecki

If you have got questions about the quiz about minerals you can send me an e-mail under the following adress:
webmaster@hpwt.de

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Last Update: 10.10.2004