Manhattan Schist #1
John Kaprielian
Precambrian And Paleozoic Strata
Science Source
Metamorphic Rock
Art Wolfe
Crumpled Strata Of Metamorphic Rocks
Gregory G. Dimijian, M.D.
Rock Cycle
Spencer Sutton
Metamorphic Rock In North Carolina
Kenneth Murray
Metamorphic Rocks
Gregory G. Dimijian, M.D.
Metamorphic Rock
Charles Angelo
Manhattan Schist
John Kaprielian
Carrara Marble Quarry, 20th Century
Photo Researchers
Lime Green Calcite #1
Millard H. Sharp
Agate From Brazil, Lm #14
Bernardo Cesare
Agate From Brazil, Lm #16
Bernardo Cesare
Quartzite, A Metamorphic Rock
Andrew J. Martinez
Slate, A Metamorphic Rock
A.b. Joyce
Gneiss, A Metamorphic Rock
Andrew J. Martinez
Strata Of Metamorphic Rocks
Gregory G. Dimijian, M.D.
Diorite Gneiss
Ted Kinsman
Micaceous Quartzite #1
A.b. Joyce
Inner Gorge, Grand Canyon
William Mullins
Green Creek Complex, Idaho #1
William Mullins
White Marble
Andrew J. Martinez
Micaceous Quartzite #2
A.b. Joyce
Hornblende Schist
Ted Kinsman
Schist
Andrew J. Martinez
Gneiss
Andrew J. Martinez
Folded Rock With Anticline
Dan Guravich
Three Kinds Of Rocks
A.b. Joyce
Continental Divide
Gregory G Dimijian MD
Sahara Beige Marble #1
Photo Researchers, Inc.
Quartz Crystals #10
Millard H. Sharp
Yellow Mica
Millard H. Sharp
Agate From Brazil, Lm #9
Bernardo Cesare
Agate From Malawi, Lm
Bernardo Cesare
Agate From Malawi, Lm #6
Bernardo Cesare
Marron Grecale Marble #1
Photo Researchers, Inc.
Dark Emperador Marble
Photo Researchers, Inc.
Crema Marfil Marble #2
Photo Researchers, Inc.
Carrara Marble Lm
Eric V. Grave
Blue Stone #2
Photo Researchers, Inc.
Azurite #2
Millard H. Sharp
Amazonite #1
Millard H. Sharp
Malachite And Chrysosolla
Millard H. Sharp
Quartz Crystals #12
Millard H. Sharp
Pyrite Crystals #1
Millard H. Sharp
Fluorite Crystals #4
Millard H Sharp
Blue Celestite #1
Millard H. Sharp
Celestite #3
Millard H. Sharp
Geode, Amethyst And Calcite Interior
Millard H. Sharp
Apophyllite Heulandite
Millard H. Sharp
Quartz Crystals #16
Millard H. Sharp
Dioptase
Millard H. Sharp
Selenite #2
Millard H. Sharp
Quartz Crystals #17
Millard H. Sharp
Cobaltoan Calcite #1
Millard H. Sharp
Quartzite Pebble
A.b. Joyce
Contorted Phyllite #1
A.b. Joyce
Agate From Argentina, Lm
Bernardo Cesare
Agate From Brazil, Lm #3
Bernardo Cesare
Lake Superior Agate, Lm
Bernardo Cesare