Snowflake Obsidian tumblestone - silica rich volcanic rock composed of a high percentage of glass Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-snowflake-obsidian-tumblestone-silica-rich-volcanic-rock-composed-23380366.html
RMBA11W2–Snowflake Obsidian tumblestone - silica rich volcanic rock composed of a high percentage of glass
Rhyolite (Mexico) Volcanic equivalent of granite Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-rhyolite-mexico-volcanic-equivalent-of-granite-37671179.html
RMC581Y7–Rhyolite (Mexico) Volcanic equivalent of granite
Rhyolite (Mexico) Volcanic equivalent of granite Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-rhyolite-mexico-volcanic-equivalent-of-granite-37688421.html
RMC58RY1–Rhyolite (Mexico) Volcanic equivalent of granite
Rhyolite [Mexico] volcanic equivalent of granite Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/rhyolite-mexico-volcanic-equivalent-of-granite-image336088819.html
RM2AEP4M3–Rhyolite [Mexico] volcanic equivalent of granite
Rhyolite [Mexico] volcanic equivalent of granite Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/rhyolite-mexico-volcanic-equivalent-of-granite-image336088814.html
RM2AEP4KX–Rhyolite [Mexico] volcanic equivalent of granite
Rhyolite [Mexico] volcanic equivalent of granite Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/rhyolite-mexico-volcanic-equivalent-of-granite-image336088813.html
RM2AEP4KW–Rhyolite [Mexico] volcanic equivalent of granite
Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/gabbro-coarse-grained-intrusive-igneous-rock-formed-from-the-slow-cooling-of-magnesium-rich-and-iron-rich-magma-image335539893.html
RM2ADW4FH–Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma
Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/gabbro-coarse-grained-intrusive-igneous-rock-formed-from-the-slow-cooling-of-magnesium-rich-and-iron-rich-magma-image335539884.html
RM2ADW4F8–Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma
Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/gabbro-coarse-grained-intrusive-igneous-rock-formed-from-the-slow-cooling-of-magnesium-rich-and-iron-rich-magma-image335539891.html
RM2ADW4FF–Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma
Granodiorite (Norway) phaneritic-textured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/granodiorite-norway-phaneritic-textured-intrusive-igneous-rock-similar-to-granite-but-containing-more-plagioclase-feldspar-than-orthoclase-feldspar-image335415401.html
RM2ADKDND–Granodiorite (Norway) phaneritic-textured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar
Granodiorite (Norway) phaneritic-textured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspa Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/granodiorite-norway-phaneritic-textured-intrusive-igneous-rock-similar-to-granite-but-containing-more-plagioclase-feldspar-than-orthoclase-feldspa-image335536476.html
RM2ADW05G–Granodiorite (Norway) phaneritic-textured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspa
Granodiorite (Norway) phaneritic-textured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/granodiorite-norway-phaneritic-textured-intrusive-igneous-rock-similar-to-granite-but-containing-more-plagioclase-feldspar-than-orthoclase-feldspar-image335415427.html
RM2ADKDPB–Granodiorite (Norway) phaneritic-textured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar
Granodiorite (Norway) phaneritic-textured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspa Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/granodiorite-norway-phaneritic-textured-intrusive-igneous-rock-similar-to-granite-but-containing-more-plagioclase-feldspar-than-orthoclase-feldspa-image335415389.html
RM2ADKDN1–Granodiorite (Norway) phaneritic-textured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspa
Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma (c4cm long) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/gabbro-coarse-grained-intrusive-igneous-rock-formed-from-the-slow-cooling-of-magnesium-rich-and-iron-rich-magma-c4cm-long-image541091285.html
RM2PC8RCN–Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma (c4cm long)
Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma (c4cm long) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/gabbro-coarse-grained-intrusive-igneous-rock-formed-from-the-slow-cooling-of-magnesium-rich-and-iron-rich-magma-c4cm-long-image541091210.html
RM2PC8RA2–Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma (c4cm long)
Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma (c4cm long) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/gabbro-coarse-grained-intrusive-igneous-rock-formed-from-the-slow-cooling-of-magnesium-rich-and-iron-rich-magma-c4cm-long-image541091205.html
RM2PC8R9W–Gabbro - coarse-grained, intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma (c4cm long)