Mohs hardness 3 rocks & minerals
Mohs hardness 3 is the calcite mark — easily scratched by a copper coin. Many carbonates and softer sulfides cluster here.
Showing 1441–1560 of 2721 rocks (page 13 of 23).
Magbasiteraremineral · Mohs 3.5-4yellow, yellowish-green, brown
Maghagendorfiteraremineral · Mohs 3.5-4yellow, brown, greenish-yellow- No imageMaghrebiteraremineral · Mohs 3-4yellow, pale yellow
Magnanelliiteraremineral · Mohs 3.5dark brown, black- No imageMagnesiobermaniteraremineral · Mohs 3-4yellow, brownish yellow, brown
Magnesiocanutiteraremineral · Mohs 3-4yellow, pale yellow
Magnesiochlorophoeniciteraremineral · Mohs 3-3.5pink, reddish-pink, violet-pink
Magnesiocopiapiteuncommonmineral · Mohs 2.5-3yellow, golden yellow- No imageMagnesiofluckiteraremineral · Mohs 3-4colorless, white
Magnesiohulsiteraremineral · Mohs 3-4black, brownish-black
Magnesiokoritnigiteraremineral · Mohs 3-4colorless, white, pale pink- No imageMagnesiovoltaiteraremineral · Mohs 2.5-3black, dark green, dark brown
- No imageMagnesiozippeiteraremineral · Mohs 2-3yellow, orange-yellow
Magnesitecommonmineral · Mohs 3.5-4.5white, gray, yellow
Magnesiumraremineral · Mohs 2.5silvery-white- No imageMagnesium Carbonatescommonmineral · Mohs 3.5-4.5white, colorless, gray
- No imageMagnioursiliteraremineral · Mohs 2-3yellow, pale yellow
Magnussoniteraremineral · Mohs 3.5emerald green, grass green- No imageMaikainiteraremineral · Mohs 3.5black, dark gray
- No imageMajakiteraremineral · Mohs 3.5-4white, pale brass-yellow
- No imageMajindeiteraremineral · Mohs 3.5black
- No imageMajzlaniteraremineral · Mohs 2.5yellow, pale yellow
Makatiteraremineral · Mohs 3-4white, colorless
Makovickyiteraremineral · Mohs 3-3.5lead-gray, tin-white
Malachitecommonmineral · Mohs 3.5-4bright green, dark green, emerald green
Malhmooditeraremineral · Mohs 2.5-3yellow, brownish yellow
Mallestigiteraremineral · Mohs 3-3.5white, colorless, pale yellow- No imageMalysheviteraremineral · Mohs 3.5green, yellowish-green
Mammoth Toothcommonfossil · Mohs 2.5-3tan, brown, cream
Mammothiteraremineral · Mohs 2.5white, colorless, pale yellow
Manandoniteraremineral · Mohs 2.5white, colorless, pale pink
Manatee Bonescommonfossil · Mohs 3-5tan, brown, gray
Mangangordoniteraremineral · Mohs 3.5pink, pale pink, colorless
Mangano Calcitecommonmineral · Mohs 3pink, pale pink, peach
Manganoblöditeraremineral · Mohs 3yellow, yellow-orange, brown- No imageManganokaskasiteraremineral · Mohs 3-4black, dark brown
Manganolangbeiniteraremineral · Mohs 3.5-4pink, pale pink, colorless- No imageManganonaujakasiteraremineral · Mohs 2.5pink, pale red, colorless
- No imageManganoquadratiteraremineral · Mohs 3colorless, white, gray
Manganostibiteraremineral · Mohs 3.5-4red, dark red, brownish-red- No imageMangazeiteraremineral · Mohs 3white
- No imageManitobaiteraremineral · Mohs 3-4yellow, brown
Mannarditeraremineral · Mohs 3-4black, brownish-black
Mansfielditeraremineral · Mohs 3.5-4white, colorless, pale yellow
Marblecommonmetamorphic · Mohs 3-4white, gray, black- No imageMarcobaldiiteraremineral · Mohs 3dark gray, lead gray
- No imageMarécottiteraremineral · Mohs 2-3yellow, orange-yellow
- No imageMargaritasiteraremineral · Mohs 2-3yellow, golden yellow
Margariteuncommonmineral · Mohs 3.5-4pink, white, yellow
Margarosaniteraremineral · Mohs 2.5-3white, colorless, pale blue
Maripositeuncommonmineral · Mohs 2.5-3bright green, emerald green- No imageMarkascheriteraremineral · Mohs 3.5dark brown, black, reddish-brown
- No imageMarkcooperiteraremineral · Mohs 3-4yellow, yellow-brown
- No imageMarkliteraremineral · Mohs 3-3.5white, colorless, yellowish
- No imageMarmolitecommonmineral · Mohs 2.5-3green, pale green, white
Marriteraremineral · Mohs 3dark gray, black
Marshiteraremineral · Mohs 2.5red, brownish-red, colorless
Marthoziteraremineral · Mohs 3green, yellow-green
Martinandresiteraremineral · Mohs 3-4colorless, white, yellow- No imageMartyiteraremineral · Mohs 3.5-4orange, reddish-orange, yellow
- No imageMarumoiteraremineral · Mohs 3lead-gray, black
Mascagniteuncommonmineral · Mohs 2.5white, yellow, gray
Mastodon Toothuncommonfossil · Mohs 3-5brown, tan, black
Masutomiliteraremineral · Mohs 2.5-3pale pink, violet, lilac
Masuyiteraremineral · Mohs 3-4orange, red, reddish-orange
Mathesiusiteraremineral · Mohs 2.5yellow, greenish-yellow
Matilditeuncommonmineral · Mohs 2.5-3lead-gray, black
Matlockiteraremineral · Mohs 2.5-3yellow, colorless, white- No imageMattagamiteraremineral · Mohs 3.5white, gray
Mattheddleiteraremineral · Mohs 3.5colorless, white, yellow
Matulaiteraremineral · Mohs 2.5-3white, colorless, pale yellow- No imageMatyhiteraremineral · Mohs 3.5-4yellow, brownish-yellow
Mawbyiteraremineral · Mohs 3-4red, brownish-red, orange-red
Mawsoniteraremineral · Mohs 3.5orange, reddish-orange, brownish-yellow- No imageMayingiteraremineral · Mohs 3-3.5white, gray
- No imageMazzettiiteraremineral · Mohs 2.5-3black, gray
- No imageMazzite-Nararemineral · Mohs 3.5-4colorless, white
Mcalpineiteraremineral · Mohs 3.5green, yellow-green
Mcauslaniteraremineral · Mohs 3blue, greenish-blue, colorless
Mcbirneyiteraremineral · Mohs 2.5-3deep blue, blue-green
Mcconnelliteraremineral · Mohs 3dark gray, black- No imageMccrillisiteraremineral · Mohs 3.5pink, colorless, white
Mcgoverniteraremineral · Mohs 2.5bronze-brown, yellow-brown, orange-brown
Mcguinnessiteraremineral · Mohs 2.5blue, greenish-blue, light blue
Mckelveyite-(Y)raremineral · Mohs 3.5yellow, yellowish-brown, greenish-yellow
Mckinstryiteraremineral · Mohs 2.5iron-black, steel-gray- No imageMegacycliteraremineral · Mohs 3white, colorless
- No imageMegalodon Teethcommonfossil · Mohs 3-5gray, black, brown
Megalodon Toothcommonfossil · Mohs 3-5black, gray, brown- No imageMeieriteraremineral · Mohs 3.5colorless, white
- No imageMeisseriteraremineral · Mohs 3yellow, orange-yellow
- No imageMeitneriteraremineral · Mohs 3white, gray
Mejillonesiteraremineral · Mohs 3yellow, yellowish-brown- No imageMelaconitecommonmineral · Mohs 3black, gray
- No imageMelanarsiteraremineral · Mohs 3.5deep red, dark brown, black
Melanothalliteraremineral · Mohs 3black, dark blue
Melanovanaditeraremineral · Mohs 2.5black, dark brown
Melliteraremineral · Mohs 2-2.5honey-yellow, brownish, reddish-yellow- No imageMélonjosephiteraremineral · Mohs 3.5-4black, dark brown
Mendipiteraremineral · Mohs 2.5white, yellow, light yellow
Mendozavilite-NaCuraremineral · Mohs 2.5-3yellow, yellow-orange, brownish-yellow
Mendozavilite-NaFeraremineral · Mohs 2-3yellow, orange, brown
Mendoziteraremineral · Mohs 2.5colorless, white
Meneghiniteraremineral · Mohs 2.5lead-gray, black- No imageMenezesiteraremineral · Mohs 3.5yellow, yellow-orange
- No imageMengxianminiteraremineral · Mohs 3-4yellow, brownish-yellow
- No imageMenshikoviteraremineral · Mohs 3.5-4white, pale yellow
- No imageMereiteriteraremineral · Mohs 2.5colorless, white, yellowish-white
- No imageMertieiteraremineral · Mohs 3.5white, pale yellow
- No imageMesaiteraremineral · Mohs 3-4red, reddish-orange
Messeliteraremineral · Mohs 3colorless, white, pale yellow- No imageMeta-ankoleiteraremineral · Mohs 2.5yellow, yellowish-green
Meta-autunitecommonmineral · Mohs 2-2.5yellow, yellow-green, light green- No imageMetacalciouranoiteraremineral · Mohs 3-4yellow, orange, brown
Metacinnabaruncommonmineral · Mohs 3black, gray, brownish-black- No imageMetahaiweeiteraremineral · Mohs 2-3yellow, pale yellow, white
Metaheinrichiteraremineral · Mohs 2.5yellow, yellow-green- No imageMetahohmanniteraremineral · Mohs 2.5-3yellow, brownish-yellow
Metakahleriteraremineral · Mohs 2-3yellow, yellow-green- No imageMetakirchheimeriteraremineral · Mohs 2-2.5pink, pale pink, rose
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