Sedimentary rocks & minerals
Sedimentary rocks form from accumulated grains, chemical precipitates, or organic material, usually in layered beds. They preserve most of the fossil record and many economic deposits.
Field tip: Bedding planes, grain rounding, and fossil content all point to a sedimentary origin.
53 sedimentarys in this encyclopedia.
Arkosecommonsedimentary · Mohs 6-7pink, gray, tan
Banded Iron Formationcommonsedimentary · Mohs 5-7red, gray, black
Brecciacommonsedimentary · Mohs 3-7gray, brown, red
Cannel Coalcommonsedimentary · Mohs 2-3black, brownish-black
Chalkcommonsedimentary · Mohs 1white, off-white, gray
Claystonecommonsedimentary · Mohs 1-2gray, brown, red
Coalcommonsedimentary · Mohs 0.5-2.5black, brown
Concretioncommonsedimentary · Mohs 3-7brown, gray, tan
Coquinacommonsedimentary · Mohs 3tan, white, light gray
Crinoidal Limestonecommonsedimentary · Mohs 3gray, tan, white
Dolostonecommonsedimentary · Mohs 3.5-4gray, white, buff
Geodecommonsedimentary · Mohs 7white, gray, brown
Greywackecommonsedimentary · Mohs 6-7gray, dark gray, brownish gray
Impactiteuncommonsedimentary · Mohs 5-7black, brown, green
Itacolumiteuncommonsedimentary · Mohs 6-7yellow, brown, tan
Limestonecommonsedimentary · Mohs 3white, gray, tan
Mudstonecommonsedimentary · Mohs 2-3gray, brown, red
Oolitic Limestonecommonsedimentary · Mohs 3white, tan, gray
Puddingstonecommonsedimentarymulticolored, gray, red
Red Sandstonecommonsedimentary · Mohs 6-7red, red-brown, rust
Sandstonecommonsedimentary · Mohs 6-7tan, brown, yellow
Septarian Nodulecommonsedimentary · Mohs 3-5brown, yellow, gray
Shalecommonsedimentary · Mohs 2-3gray, black, red
Siltstonecommonsedimentary · Mohs 3-4gray, red, brown
Travertinecommonsedimentary · Mohs 3-4white, tan, cream
Tufacommonsedimentary · Mohs 3white, gray, yellow
Wonderstonecommonsedimentary · Mohs 6.5-7red, yellow, brown
Bauxitecommonsedimentary · Mohs 1-3red, brown, tan
Beach Glasssedimentarygreen, brown, white
Bentonitecommonsedimentary · Mohs 1-2white, cream, gray
Bluestonecommonsedimentary · Mohs 3-7blue, gray, bluish-gray
Catlinitecommonsedimentary · Mohs 2.5-3red, reddish-brown, brown
Crab Orchard Sand Stonecommonsedimentary · Mohs 6-7pink, red, buff- No imageDiatomitesedimentarywhite
Dunham Dolomitecommonsedimentary · Mohs 3.5-4gray, buff, tan- No imageGeyseritesedimentary
Gypsitecommonsedimentary · Mohs 1.5-2white, gray, yellowish- No imageIronstonesedimentarygray, brown
- No imageJacobsville Sandstonesedimentaryred, pink, white
Jaspilitecommonsedimentary · Mohs 6-7red, gray, silver- No imageKona Dolomitesedimentary
Lightning Stonesedimentary
Nodulecommonsedimentarygray, brown, black
Novaculitecommonsedimentary · Mohs 7white, gray, black
Omarsedimentarydark gray, gray, tannish gray
Oolitecommonsedimentary · Mohs 3white, gray, tan
Phosphoritecommonsedimentary · Mohs 3-5gray, brown, black
Potomac Marblecommonsedimentary · Mohs 3-4red, green, brown
Rockcastle Conglomeratecommonsedimentary · Mohs 6-7gray, white, tan- No imageSandstone With Calcite Veincommonsedimentary · Mohs 3-7tan, brown, red
Siliceous Oolitecommonsedimentary · Mohs 6.5-7white, gray, tan
Whetstonecommonsedimentary · Mohs 5-7gray, white, brown
Zebra Rocksedimentaryred, gray, white
Identify sedimentarys in the field
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