beth schaefer:
manganopylite dolomite
beth schaefer:
malachite
beth schaefer:
malachite cuprite azurite
beth schaefer:
malachite cuprite smithsonite
beth schaefer:
Manganese oxide
beth schaefer:
marcasite
beth schaefer:
Martite
beth schaefer:
McGovernite
beth schaefer:
Memitite Theba AZ 5752
beth schaefer:
meneghinite
beth schaefer:
ludlamite vivianite messelite groton nh 6980
beth schaefer:
messelite
beth schaefer:
mesolite stilbite
beth schaefer:
Metastrengite or phosphosiderite
beth schaefer:
MetaTorbernite
beth schaefer:
mica
beth schaefer:
millerite
beth schaefer:
mimetite
beth schaefer:
Minium
beth schaefer:
mitridatite
beth schaefer:
Mitridatite
beth schaefer:
molybdenite
beth schaefer:
molybdenite
beth schaefer:
Mooreite ogdensburg NJ 414
beth schaefer:
morganite variety of beryl
beth schaefer:
mottramite
beth schaefer:
mottramite psittachinite
beth schaefer:
Mullite
beth schaefer:
murdochite
beth schaefer:
muscovite