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 1–120 of 829 brown rocks and minerals.
Achondriterareigneous · Mohs 5-7gray, brown, black
Aegirinecommonmineral · Mohs 6green, dark green, black
Agatecommonmineral · Mohs 6.5-7white, gray, blue
Agatized Coralcommonfossil · Mohs 6.5-7white, gray, pink
Agatized Cycad Wooduncommonfossil · Mohs 6.5-7brown, tan, gray
Agatized Dinosaur Boneuncommonfossil · Mohs 6.5-7red, brown, tan
Agatized Picture Woodcommonfossil · Mohs 6.5-7brown, tan, black
Agatized Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Alibates Flintuncommonmineral · Mohs 6.5-7red, white, blue
Almandinecommonmineral · Mohs 7-7.5dark red, reddish-brown, brownish-black
Ambercommonfossil · Mohs 2-2.5yellow, orange, brown
Ammonitecommonfossil · Mohs 3-4brown, gray, black
Amygdaloidal Basaltcommonigneous · Mohs 5-6gray, black, green
Anataseuncommonmineral · Mohs 5.5-6black, brown, blue
Andalusitecommonmineral · Mohs 6.5-7.5reddish-brown, brown, pink
Andraditecommonmineral · Mohs 6.5-7black, brown, green
Ankeritecommonmineral · Mohs 3.5-4white, yellow, brown
Anthophyllitecommonmineral · Mohs 5.5-6brown, gray, white
Antigoritecommonmineral · Mohs 2.5-3.5green, yellow-green, brown
Apatitecommonmineral · Mohs 5green, blue, yellow
Aragonitecommonmineral · Mohs 3.5-4white, colorless, yellow
Astrophylliteuncommonmineral · Mohs 3bronze, golden-yellow, brown
Aventurinecommongemstone · Mohs 6.5-7green, red, brown
Axiniteuncommonmineral · Mohs 6.5-7brown, violet-brown, plum-blue
Baculitecommonfossil · Mohs 3-4brown, gray, beige
Banded Iron Formationcommonsedimentary · Mohs 5-7red, gray, black
Baritecommonmineral · Mohs 3-3.5colorless, white, yellow
Barite Rosecommonmineral · Mohs 3-3.5brown, reddish-brown, tan
Basaltcommonigneous · Mohs 6black, dark gray, dark green
Belemnitecommonfossil · Mohs 3-4brown, black, gray
Biggs Jaspercommonmineral · Mohs 6.5-7tan, brown, cream
Binghamiteraremineral · Mohs 7red, brown, gold
Bison Skullcommonfossil · Mohs 3-5white, brown, tan
Bivalve Fossilcommonfossil · Mohs 3-5tan, brown, gray
Blastoidcommonfossilgray, brown, white
Boji Stonescommonmineral · Mohs 3.5-4brown, gray, black
Botswana Agatecommonmineral · Mohs 6.5-7gray, white, brown
Boulder Opaluncommongemstone · Mohs 5.5-6.5black, white, gray
Brachiopodcommonfossilgray, brown, white
Brazilian Agatecommonmineral · Mohs 6.5-7gray, white, brown
Brecciacommonsedimentary · Mohs 3-7gray, brown, red
Brecciated Jaspercommonmineral · Mohs 6.5-7red, brown, yellow
Brookiteuncommonmineral · Mohs 5.5-6reddish-brown, brown, black
Brown Tourmalinecommonmineral · Mohs 7-7.5brown, dark brown, yellowish-brown
Bruneau Jasperuncommonmineral · Mohs 6.5-7red, brown, cream
Bryozoancommonfossil · Mohs 3-5white, gray, tan
Calaminecommonmineral · Mohs 4.5-5white, colorless, blue
Calcitecommonmineral · Mohs 3white, colorless, yellow
Calcite Onyxcommonmineral · Mohs 3white, brown, tan
Calymenecommonfossilgray, brown, tan
Cantera Opalcommongemstone · Mohs 5.5-6.5orange, red, yellow
Carbonatiterareigneous · Mohs 3-4white, gray, tan
Cassiteritecommonmineral · Mohs 6-7black, brown, reddish-brown
Cat's Eye Quartzuncommongemstone · Mohs 7gray, yellow, green
Cave Pearlscommonmineral · Mohs 3white, cream, gray
Celestinecommonmineral · Mohs 3-3.5colorless, white, pale blue
Cerussitecommonmineral · Mohs 3-3.5colorless, white, gray
Chabazitecommonmineral · Mohs 4-5white, colorless, pink
Chalcedonycommonmineral · Mohs 6.5-7white, gray, blue
Charnockitecommonigneous · Mohs 6-7gray, greenish, brown
Chertcommonmineral · Mohs 6.5-7white, gray, brown
Chert Nodulecommonmineral · Mohs 6.5-7gray, brown, black
Chondritecommonigneous · Mohs 5-6gray, brown, black
Chrysoberyluncommonmineral · Mohs 8.5yellow, yellow-green, brown
Chrysocollacommonmineral · Mohs ~2-4blue, blue-green, green
Cinnabaruncommonmineral · Mohs 2-2.5red, brownish-red, scarlet
Claystonecommonsedimentary · Mohs 1-2gray, brown, red
Coalcommonsedimentary · Mohs 0.5-2.5black, brown
Color Change Garnetraregemstone · Mohs 7-7.5blue, green, purple
Common Opalcommonmineral · Mohs 5.5-6.5white, gray, yellow
Concretioncommonsedimentary · Mohs 3-7brown, gray, tan
Concretion With Fossilcommonfossil · Mohs 3-5brown, gray, tan
Condor Agatecommonmineral · Mohs 6.5-7red, orange, yellow
Copalcommonfossil · Mohs 1.5-2.5yellow, orange, brown
Coppercommonmineral · Mohs 2.5-3copper-red, reddish-brown, brown
Coral Fossilcommonfossil · Mohs 6.5-7white, tan, brown
Corundumcommonmineral · Mohs 9colorless, red, blue
Coyamito Agateuncommonmineral · Mohs 6.5-7red, white, pink
Crazy Lace Agatecommonmineral · Mohs 6.5-7white, gray, yellow
Crinoidcommonfossil · Mohs 3-4gray, white, tan
Crinoid Stemcommonfossil · Mohs 3-4gray, white, tan
Crinoidal Limestonecommonsedimentary · Mohs 3gray, tan, white
Crocodile Toothcommonfossil · Mohs 3-5brown, tan, black
Dark Gray Flintcommonmineral · Mohs 6.5-7dark gray, black, brown
Datolitecommonmineral · Mohs 5-5.5white, colorless, yellow
Datolite Noduleuncommonmineral · Mohs 5-5.5white, yellow, green
Dendritic Agatecommonmineral · Mohs 6.5-7white, colorless, gray
Dendritic Opalcommonmineral · Mohs 5.5-6.5white, cream, colorless
Desert Rose Baritecommonmineral · Mohs 3-3.5tan, brown, cream
Desert Rose Gypsumcommonmineral · Mohs 2brown, tan, white
Diamondcommongemstone · Mohs 10colorless, yellow, brown
Dinosaur Bonecommonfossil · Mohs 5.5-7brown, red, black
Dinosaur Coproliteuncommonfossil · Mohs 3-5brown, tan, black
Dinosaur Toothcommonfossil · Mohs 3-5brown, black, gray
Diopsidecommonmineral · Mohs 5.5-6.5white, gray, green
Dolomitecommonmineral · Mohs 3.5-4white, gray, pink
Dolostonecommonsedimentary · Mohs 3.5-4gray, white, buff
Dravitecommonmineral · Mohs 7brown, dark brown, yellowish brown
Dryhead Agateuncommonmineral · Mohs 6.5-7red, orange, yellow
Echinoidcommonfossil · Mohs 3-4white, gray, tan
Elrathiacommonfossilbrown, gray, black
Enstatitecommonmineral · Mohs 5-6green, brown, gray
Eudialyteuncommonmineral · Mohs 5-6red, pink, brown
Eurypteriduncommonfossilbrown, black, tan
Eye Agatecommonmineral · Mohs 6.5-7white, gray, brown
Fairburn Agateraremineral · Mohs 6.5-7red, yellow, brown
Fairy Stonecommonmineral · Mohs 7-7.5brown, reddish-brown, black
Fayaliteuncommonmineral · Mohs 6.5-7yellow, yellow-green, brown
Fern Fossilcommonfossilblack, brown, gray
Fire Agateuncommongemstone · Mohs 6.5-7red, brown, orange
Fish Fossilcommonfossil · Mohs 3-5brown, tan, gray
Flintcommonmineral · Mohs 7gray, black, brown
Flint Nodulecommonmineral · Mohs 7gray, black, brown
Fossil Insectuncommonfossil · Mohs 1-3brown, amber, black
Fossil Leafcommonfossil · Mohs 2-4brown, black, gray
Fossil Spiderrarefossilamber, brown, black
Fossilized Ferncommonfossil · Mohs 3-6black, brown, gray
Fossilized Ivoryuncommonfossil · Mohs 2.5-3white, cream, yellow
Fossilized Shark Toothcommonfossil · Mohs 3-5black, gray, brown
Fossilized Shellcommonfossil · Mohs 3-5white, gray, brown
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