M minerals
Malachite
from various origins
Carbonate from copper deposits.
Chemistry : Cu2CO3(OH)2
System : Monoclinic
Manganoan vesuvianite
from Jeffrey Mine, Canada.
Mineral from sedimentary metamorphic rocks.
Chemistry : Ca10Mg2Al4 (SiO4)5(Si2O7)2(OH)
System : Tetragonal
Marcasite
from various origins.
Dimorph of pyrite from sedimentary rocks.
Chemistry : FeS2
System : Orthorhombic
Melanophlogite
A rare mineral made of silica and organic material.
Chemistry : 46(SiO2) 6(N2,CO2) 2(CH4,N2)
System : Tetragonal
Mica
from various origins.
Aluminous phyllosilicate.
Chemistry : XY3+2 [AlSi3O10(OH,F)2]7-
System : Monoclinic
Mimetite
from various origins
Mineral from oxidation areas of lead deposits.
Chemistry : Pb5(AsO4)3Cl
System : Hexagonal
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