Brown rocks & minerals
Brown rocks and minerals are extremely common, iron oxidation alone produces a huge range of browns and tans. Look at hardness, luster, and host setting to narrow it down.
Showing 121–240 of 829 brown rocks (page 2 of 7).
Fossilized Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Fulguriteuncommonmineral · Mohs 6.5-7white, gray, tan
Garnetcommonmineral · Mohs 6.5-7.5red, green, yellow
Garnet Schistcommonmetamorphic · Mohs 3-7gray, brown, silver
Gastropod Fossilcommonfossilbrown, gray, white
Geodecommonsedimentary · Mohs 7white, gray, brown
Goethitecommonmineral · Mohs 5-5.5yellowish-brown, reddish-brown, black
Goniatitecommonfossil · Mohs 3-4brown, gray, black
Grossularcommonmineral · Mohs 6.5-7green, brown, yellow
Grossularite Garnetcommonmineral · Mohs 6.5-7.5green, yellow, brown
Gypsumcommonmineral · Mohs 1.5-2colorless, white, gray
Hemimorphitecommonmineral · Mohs 4.5-5colorless, white, blue
Heulanditecommonmineral · Mohs 3.5-4white, colorless, yellow
Horn Coralcommonfossil · Mohs 3-4gray, tan, brown
Hornfelscommonmetamorphic · Mohs 5-7gray, dark gray, black
Horsetail Fossilcommonfossil · Mohs 3-5gray, brown, black
Idocrasecommonmineral · Mohs 6.5green, brown, yellow
Ignimbritecommonigneous · Mohs 5-7gray, white, pink
Impactiteuncommonsedimentary · Mohs 5-7black, brown, green
Indochinitecommonmineral · Mohs 5.5-6.5black, brown
Insect in Ambercommonfossil · Mohs 2-2.5yellow, orange, brown
Iris Agateraremineral · Mohs 6.5-7colorless, white, gray
Iron Meteoriteuncommonigneous · Mohs 4-5metallic gray, brown, black
Iron Orecommonmineral · Mohs 5-6.5red, black, brown
Itacolumiteuncommonsedimentary · Mohs 6-7yellow, brown, tan
Jaspercommonmineral · Mohs 6.5-7red, yellow, brown
Keokuk Geodecommonmineral · Mohs 7clear, white, gray
Keweenaw Agatecommonmineral · Mohs 6.5-7red, orange, white
Kimberliteuncommonigneous · Mohs 3-5dark gray, bluish gray, greenish gray
Knightiacommonfossiltan, brown, gray
Lake Superior Agatecommonmineral · Mohs 6.5-7red, orange, yellow
Lamproiterareigneousgray, greenish-gray, brown
Las Choyas Coconut Geodecommonmineral · Mohs 7white, clear, purple
Leopard Skin Jaspercommonmineral · Mohs 6.5-7brown, tan, black
Liddicoatiteraremineral · Mohs 7.5pink, red, green
Limonitecommonmineral · Mohs 4-5.5yellow, brown, reddish-brown
Lizarditecommonmineral · Mohs 2.5green, yellow-green, white
Llaniterareigneous · Mohs 6-7brown, reddish-brown, gray
Magnesitecommonmineral · Mohs 3.5-4.5white, gray, yellow
Mali Garnetuncommongemstone · Mohs 6.5-7.5yellow, green, brown
Mammoth Toothcommonfossil · Mohs 2.5-3tan, brown, cream
Mary Ellen Jaspercommonfossil · Mohs 6.5-7red, brown, black
Mastodon Toothuncommonfossil · Mohs 3-5brown, tan, black
Matrix Opalcommongemstone · Mohs 5.5-6.5multicolored, brown, black
Megalodon Toothcommonfossil · Mohs 3-5black, gray, brown
Mesosideriterareigneous · Mohs 5-6silver, gray, black
Meteoriterareigneous · Mohs 5-8black, brown, gray
Mexican Onyxcommonmineral · Mohs 3white, yellow, brown
Mica Schistcommonmetamorphic · Mohs 3-6silver, gray, black
Mimetiteuncommonmineral · Mohs 3.5-4yellow, orange, brown
Montana Moss Agatecommonmineral · Mohs 6.5-7clear, white, gray
Moqui Marblescommonmineral · Mohs 5.5-6.5brown, reddish-brown, black
Morrisoniteraremineral · Mohs 6.5-7blue-green, cream, brown
Mosasaur Toothcommonfossil · Mohs 3-5black, brown, tan
Moss Agatecommonmineral · Mohs 6.5-7white, green, brown
Mudstonecommonsedimentary · Mohs 2-3gray, brown, red
Muscovitecommonmineral · Mohs 2.5-4colorless, yellow, brown
Mylonitecommonmetamorphic · Mohs 5-7gray, black, white
Native Coppercommonmineral · Mohs 2.5-3copper-red, reddish-brown, tarnished-brown
Native Sulfurcommonmineral · Mohs 1.5-2.5yellow, yellow-orange, yellow-green
Nautiloidcommonfossilbrown, gray, white
Nephelinecommonmineral · Mohs 5.5-6white, gray, yellowish
Nephrite Jadecommonmineral · Mohs 6-6.5green, white, yellow
Obsidian Nodulecommonmineral · Mohs 5-5.5black, brown, gray
Oligoclasecommonmineral · Mohs 6-6.5white, colorless, gray
Oolitic Limestonecommonsedimentary · Mohs 3white, tan, gray
Opalcommonmineral · Mohs 5.5-6white, black, colorless
Opalized Woodcommonfossil · Mohs 5.5-6.5brown, red, yellow
Orbicular Jaspercommonmineral · Mohs 6.5-7green, yellow, brown
Orthocerascommonfossil · Mohs 3-4black, brown, gray
Owyhee Jaspercommonmineral · Mohs 6.5-7blue, brown, cream
Owyhee Thundereggcommonmineral · Mohs 6.5-7blue, purple, white
Pallasiterareigneous · Mohs 5-6yellow, green, brown
Pentlanditecommonmineral · Mohs 3.5-4bronze-yellow, brownish-yellow, bronze
Perthitecommonmineral · Mohs 6white, gray, pink
Petoskey Stonecommonfossil · Mohs 3-4gray, brown, tan
Petrified Algaecommonfossil · Mohs 6.5-7tan, brown, gray
Petrified Cycaduncommonfossil · Mohs 6.5-7brown, tan, black
Petrified Dinosaur Boneuncommonfossil · Mohs 6.5-7red, brown, yellow
Petrified Palmcommonfossil · Mohs 6.5-7brown, tan, black
Petrified Palm Woodcommonfossil · Mohs 6.5-7tan, brown, black
Petrified Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Phacopscommonfossil · Mohs 3-5brown, gray, black
Phantom Quartzcommonmineral · Mohs 7colorless, white, gray
Phillipsitecommonmineral · Mohs 4-5white, colorless, yellow
Phlogopitecommonmineral · Mohs 2-3brown, yellowish-brown, reddish-brown
Picture Jaspercommonmineral · Mohs 6.5-7brown, tan, cream
Pietersiteuncommonmineral · Mohs 6.5-7blue, gold, brown
Plant Fossilcommonfossilbrown, black, gray
Plume Agatecommonmineral · Mohs 6.5-7white, gray, brown
Poppy Jaspercommonmineral · Mohs 6.5-7red, yellow, brown
Prairie Agatecommonmineral · Mohs 6.5-7yellow, brown, orange
Priday Plume Agatecommonmineral · Mohs 6.5-7red, pink, white
Priday Thundereggcommonmineral · Mohs 6.5-7red, brown, white
Puddingstonecommonsedimentarymulticolored, gray, red
Pyromorphiteuncommonmineral · Mohs 3.5-4green, yellow, brown
Pyrophyllitecommonmineral · Mohs 1-2white, gray, pale green
Pyroxenitecommonigneous · Mohs 5-7dark green, brown, black
Pyrrhotitecommonmineral · Mohs 3.5-4.5bronze, brown, red-brown
Quartzcommonmineral · Mohs 7colorless, white, gray
Rhodochrositeuncommonmineral · Mohs 3.5-4pink, red, rose-red
Rock Gypsumcommonmineral · Mohs 2white, gray, colorless
Rose Rockcommonmineral · Mohs 3-3.5reddish-brown, red, tan
Royston Turquoiseuncommonmineral · Mohs 5-6blue, green, brown
Rugose Coralcommonfossil · Mohs 3-4white, gray, brown
Sagenite Agatecommonmineral · Mohs 6.5-7clear, white, yellow
Sand Dollar Fossilcommonfossil · Mohs 3white, tan, gray
Sandstonecommonsedimentary · Mohs 6-7tan, brown, yellow
Schistcommonmetamorphic · Mohs 3-6silver, gray, black
Sea Urchin Fossilcommonfossil · Mohs 3-5white, gray, tan
Selenite Rosecommonmineral · Mohs 2white, colorless, tan
Septarian Nodulecommonsedimentary · Mohs 3-5brown, yellow, gray
Serpentinecommonmineral · Mohs 2.5-5.5green, yellow, brown
Serpentinitecommonmetamorphic · Mohs 2.5-5.5green, yellow-green, black
Shalecommonsedimentary · Mohs 2-3gray, black, red
Shark Toothcommonfossil · Mohs 3-5black, brown, gray
Shocked Quartzraremineral · Mohs 7clear, white, gray
Sideritecommonmineral · Mohs 3.75-4.25yellow, brown, gray
Silicified Algaecommonfossil · Mohs 6.5-7tan, brown, gray
Silicified Dinosaur Boneuncommonfossil · Mohs 6.5-7red, brown, black
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