MICROCLINE
KAlSi3O8
variety amazonite      variété amazonite
with smoky quartz    avec quartz enfumé
Pike's Peak, Colorado, United States of America	

QUARTZ
SiO2
variety agate      variété agate
Brazil	

QUARTZ
SiO2
variety rock crystal      variété cristal de roche

QUARTZ
SiO2
variety rock crystal      variété cristal de roche
California, United States of America	

QUARTZ
SiO2
variety rock crystal      variété cristal de roche
Mount Stephen, British Columbia	

QUARTZ
SiO2
variety amethyst   variété améthyste
in lava pipe         dans un diatrème
Brazil	

COPPER   CUIVRE
Cu
Michigan, United States of America	

MALACHITE
Cu2+2(CO3)(OH)2
Morenci, Arizona, United States of America	

CALCITE
CaCO3
septarian nodule            septaria
London Clay, England	

GRANITE
Saint-Jean, Québec	

ORTHOCLASE
KAlSi3O8
Ottawa, Ontario	

BIOTITE
K(Mg,Fe2+)3AlSi3O10(OH)2
Templeton, Québec	

MARCASITE    MARCASSITE
FeS2
spherulitic habit in shale / habitus fibro-radié dans shale
known as "pyrite sun" or "dollar" /  "pyrite-soleil"
Sparta, Illinois, United States of America	

SULFUR    SOUFRE
S
Sicily, Italy	

PYRITE
FeS2

SODALITE
Na8Al6Si6O24Cl2
Bancroft, Ontario	

LIMONITE
hydrated iron oxide     oxyde de fer hydraté
iridescent     iridescent
Germany