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 961–1080 of 1176 brown rocks (page 9 of 10).
Silicified Agatecommonfossil · Mohs 6.5-7multicolored, white, gray
Silicified Algaecommonfossil · Mohs 6.5-7tan, brown, gray- No imageSilicified Conodontuncommonfossil · Mohs 7amber, brown, white
Silicified Coralcommonfossil · Mohs 6.5-7white, gray, brown- No imageSilicified Cycad Wooduncommonfossil · Mohs 6.5-7brown, tan, white
Silicified Dinosaur Boneuncommonfossil · Mohs 6.5-7red, brown, black
Silicified Ferncommonfossil · Mohs 6.5-7brown, black, gray
Silicified Fossilcommonfossil · Mohs 6.5-7brown, red, yellow
Silicified Lignitecommonfossil · Mohs 6.5-7brown, black, gray
Silicified Mastodon Tuskrarefossil · Mohs 6.5-7white, cream, tan
Silicified Oolitecommonfossil · Mohs 6.5-7white, gray, brown
Silicified Palm Woodcommonfossil · Mohs 6.5-7brown, tan, black
Silicified Pine Coneuncommonfossil · Mohs 6.5-7brown, tan, gray
Silicified Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Silléniteraremineral · Mohs 1-2yellow, yellowish-orange, brown
Sillimanitecommonmineral · Mohs 6.5-7.5white, colorless, gray
Siltstonecommonsedimentary · Mohs 3-4gray, red, brown
Simpsoniteraremineral · Mohs 6-7yellow, brown, colorless
Sinhaliteraremineral · Mohs 6.5-7yellow, brown, greenish-brown
Skarncommonmetamorphic · Mohs 5-7green, brown, black
Slatecommonmetamorphic · Mohs 2.5-4gray, black, green- No imageSmirnovskiteraremineral · Mohs 4-5yellow, brown
Smithsonitecommonmineral · Mohs 4-4.5white, gray, green
Smoky Quartzcommonmineral · Mohs 7brown, gray, black
Smythiteraremineral · Mohs 3.5bronze, brown, gray
Snakeskin Agatecommonmineral · Mohs 6.5-7white, gray, tan
Soapstonecommonmetamorphic · Mohs 1gray, green, white
Soboleviteraremineral · Mohs 4-5yellow, brown, colorless
Sphaleritecommonmineral · Mohs 3.5-4yellow, brown, black
Spheneuncommongemstone · Mohs 5-5.5yellow, green, brown- No imageSpherulitic Chertcommonmineral · Mohs 6.5-7white, gray, tan
Spongecommonfossil · Mohs 3-5white, gray, brown
Sponge Fossilcommonfossil · Mohs 2.5-7gray, white, tan
Sputnik Aragonitecommonmineral · Mohs 3.5-4brown, tan, creamy white- No imageSrebrodolskiteraremineral · Mohs 5-6dark red, brown, black
- No imageSrilankiteraremineral · Mohs 7-8black, brown
Stannoiditeuncommonmineral · Mohs 4bronze, brown, black
Starfish Fossiluncommonfossilgray, brown, tan
Staurolitecommonmineral · Mohs 7-7.5reddish-brown, brown, brownish-black
Staurolite Crosscommonmineral · Mohs 7-7.5brown, reddish-brown, yellowish-brown- No imageStavelotite-(La)raremineral · Mohs 5yellowish-brown, brown
Steacyiteraremineral · Mohs 5yellow, brown, gray
Steatitecommonmineral · Mohs 1gray, green, white
Steenstrupine-(Ce)raremineral · Mohs 4brown, black, yellow
Stefanweissiteraremineral · Mohs 4.5brown, reddish brown, dark brownish red
Štěpiteraremineral · Mohs 3.5yellow, yellow-green, brown
Stetefeldtiteraremineral · Mohs 3.5-4.5brown, black, yellowish-brown
Stibiocolumbiteraremineral · Mohs 5-5.5yellow, brown, greenish-yellow
Stibiotantaliteraremineral · Mohs 5-5.5yellow, brown, tan
Stilbitecommonmineral · Mohs 3.5-4white, colorless, yellow
Stilbite-Cacommonmineral · Mohs 3.5-4white, colorless, yellow- No imageStilbite-Nacommonmineral · Mohs 3.5-4white, yellow, pink
Stolziteuncommonmineral · Mohs 2.5-3red, orange, yellow
Stony Meteoriterarefossil · Mohs 5-7gray, brown, black
Stony-Iron Meteoriterarefossil · Mohs 5-6brown, metallic, yellow
Stottiteraremineral · Mohs 4.5brown, green, orange
Stromatoporioidcommonfossil · Mohs 3-5tan, brown, gray
Strontio-orthojoaquiniteraremineral · Mohs 5yellow, brown, amber
Strontiojoaquiniteraremineral · Mohs 5yellow, brown, orange-brown- No imageStrontioruiziteraremineral · Mohs 5-5.5orange, brown
Strunziteraremineral · Mohs 3.5-4yellow, yellowish-brown, brown
Sturmaniteraremineral · Mohs 2.5yellow, yellow-orange, brown
Sueviteuncommonigneous · Mohs 5-6gray, brown, greenish
Sunstoneuncommongemstone · Mohs 6-6.5orange, red, gold
Svabiteraremineral · Mohs 5colorless, white, yellow
Svanbergiteuncommonmineral · Mohs 4.5-5colorless, white, yellow
Swedenborgiteraremineral · Mohs 8colorless, white, yellow
Sweetwater Agatecommonmineral · Mohs 6.5-7clear, white, gray
Symplesiteraremineral · Mohs 1.5-2blue, blue-green, green
Synadelphiteraremineral · Mohs 4.5brown, reddish-brown, yellowish-brown
Synchysite-(Ce)uncommonmineral · Mohs 4.5yellow, brown, gray
Synchysite-(Y)raremineral · Mohs 4.5yellow, brown, colorless
Szaibélyiteuncommonmineral · Mohs 3.5white, gray, yellowish- No imageTabbyiteuncommonmineral · Mohs 2-3black, brown
Tabulate Coralcommonfossil · Mohs 5-7tan, brown, gray
Tadzhikite-(Ce)raremineral · Mohs 5-6yellow, brown, greenish-brown
Tainioliteraremineral · Mohs 2.5-3colorless, white, brown- No imageTakanawaite-(Y)raremineral · Mohs 5-6yellow, brown, white
- No imageTamaiteraremineral · Mohs 4brown, yellow-brown, orange-brown
- No imageTantalite-(Mg)raremineral · Mohs 6brown, black
Tantalite-(Mn)uncommonmineral · Mohs 6black, brown, reddish-brown
Tapiolite-(Mn)raremineral · Mohs 6-6.5black, reddish-brown, brown- No imageTarbagataiteraremineral · Mohs 3yellow, yellow-brown, brown
Tektiteuncommonfossil · Mohs 5.5-6.5black, brown, olive green
Teredo Petrified Woodcommonfossil · Mohs 6.5-7brown, tan, gray- No imageTetraferriphlogopiteuncommonmineral · Mohs 2.5-3brown, dark brown, yellowish-brown
Tetrawickmaniteraremineral · Mohs 4yellow, yellow-orange, brown- No imageTexas Bouquet Agatecommonmineral · Mohs 6.5-7white, pink, red
- No imageThalliumpharmacosideriteraremineral · Mohs 2.5yellow, yellowish-green, brown
Therasiaiteraremineral · Mohs 1.5-2brown, dark brown
Thermaerogeniteraremineral · Mohs 7.5-8brown, yellow-brown, red-brown
Thomsenoliteraremineral · Mohs 2colorless, white, pale yellow
Thomsoniteuncommonmineral · Mohs 5-5.5white, pink, green
Thomsonite Noduleuncommonmineral · Mohs 5-5.5white, pink, green
Thomsonite-Cauncommonmineral · Mohs 5-5.5white, pink, green- No imageThomsonite-Sruncommonmineral · Mohs 5-5.5white, colorless, yellow
Thorbastnäsiteraremineral · Mohs 4-4.5yellow, brown, colorless- No imageThoreauliteraremineral · Mohs 5.5yellow, brown, colorless
Thoriteraremineral · Mohs 4.5-5black, brown, orange
Thoriumraremineral · Mohs 6.5-7lead-gray, black, brown
Thorogummiteraremineral · Mohs 4-5yellowish-brown, brown, grayish-brown- No imageThorosteenstrupineraremineral · Mohs 4.5-5brown, yellow, reddish-brown
Thundereggcommonmineral · Mohs 6.5-7multicolored, brown, gray
Tiger's Eyecommonmineral · Mohs 7golden-yellow, brown, reddish-brown
Tinaksiteraremineral · Mohs 6orange, yellow-orange, brown
Tinzeniteraremineral · Mohs 6.5-7yellow, orange, brown
Titaniteuncommonmineral · Mohs 5-5.5yellow, brown, green
Titanoholtiteraremineral · Mohs 7-8brown, yellow-brown
Titanowodginiteraremineral · Mohs 5-6black, brown
Titantaramelliteraremineral · Mohs 5-6brown, yellowish-brown- No imageTokkoiteraremineral · Mohs 4yellow, brown, yellow-brown
- No imageTolbachiteraremineral · Mohs 2brown, golden brown
Topazcommonmineral · Mohs 8yellow, brown, colorless
Travertinecommonsedimentary · Mohs 3-4white, tan, cream
Tremolitecommonmineral · Mohs 5-6white, gray, green
Trilobitecommonfossilbrown, gray, black
Trilobite Fossilcommonfossil · Mohs 3-5black, brown, gray- No imageTrimounsite-(Y)raremineral · Mohs 6-6.5yellow, brown, colorless
Tripliteraremineral · Mohs 4-5.5brown, reddish-brown, orange-brown- No imageTritomite-(Ce)raremineral · Mohs 5-6brown, dark brown, black
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