(MN1) Apatite crystals in calcite, Sludjanka, Russia |
(MN2) Calcite on calcite with fluorite, Denton Mine, Cave-In-Rock, IL |
Banded iron formation with tiger-eye, Mount Brockman, Australia |
(MN4) Pyrite and quartz, Peru (Joyce Proper collection) |
(MN5) Wulfenite, Red Cloud Mine, AZ |
(MN6) Amyethyst, Las Vigas, Vera Cruz, Mexico |
(MN7) Tourmaline, var. rubellite and quartz, Stewart Mine, Pala. CA |
(MN8) Gypsum crystal |
(MN9) Kyanite, Minas Gerias, Brazil |
(MN10) Hessonite garnet, Asbestos, Quebec, Canada |
(MN11) Agate, Minas Gerias, Brazil |
(MN12 ) Conchoidal fracture in quartz. |
(MN13) Watermelon tourmaline (var. elbiate) with lepidolite, Tourmaline Queen Mine, Pala, CA |
(MN14) Azurite, malachite, and limonite, Copper Queen Mine, Bisbee, AZ |
(MN15) Botryoidal hematite, Kidney Ore, Cumberland, England |
(MN16) Rhodocrosite, Catamarca, Argentina |
(MN17) Petrified wood, Chinle Fm., Holbrook, az |
(MN18) Celestite and sulfur, Tarnobrze, Poland |
(MN19) Adamite, calcite, and limonite, Ojuela Mine, Mapimi, Durango, Mexico |
(MN20) Pyrite, Rico, CO |
(MN21) Amazonite, Kola Peninsula, Murmansk, Russia |
(MN22) Muscovite crystal in quartz |
(MN23) Actinolite. Wrightwood, CA |
(MN24) Fluorite covered with drusy quartz with calcite, Denton Mine, Cave-In-Rock, IL |
(MN25) Corundum, var. ruby, Mysore, India |
(MN26) Galena on fluorite, Denton Mine, Cave-In-Rock. IL |
(MN27) Smithsonite, Kelly Mine, Magdalena, NM |
(MN28) Stilbite and apophylite, Mysore, India |
(MN29) Fluorite cleavage octahedrons, Denton Mine, Cave-In.Rock, IL |
(MN30) Pyrite on dolomite |
(MN31) Quartz, Hot Springs, AR |
(MN32) Bornite, Butte, MT |
(MN33) Quartz and calcite crystals in geode, Keokuk, IA |
(MN34) Halite, Trona, CA |
(MN35) Microcline, var. amazonite, Teller County, CO |
(MN36) Quartz and ankerite crystals in geode, Keokuk, IA |
Asbestos (Var. chrysotile), Quebec, Canada |
Gypsum (Var.selenite), Mexico |
Quartz on sphalerite, Denton Mine, Cave-In-Rock, IL |
Agate, Minas Gerais, Brazil |
Galena on dolomite with chalcopyrite, Tri-State District, Joplin, MO |