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 1081–1200 of 2721 rocks (page 10 of 23).
Holdeniteraremineral · Mohs 3-4red, pink, orange-red
Holfertiteraremineral · Mohs 3-4yellow, yellow-brown
Honey Calcitecommonmineral · Mohs 3yellow, honey-yellow, amber
Hongshiiteraremineral · Mohs 2.5-3white, pale yellow
Hopeiteraremineral · Mohs 3.5white, colorless, yellowish- No imageHorákiteraremineral · Mohs 3.5yellow, yellow-green
Horn Coralcommonfossil · Mohs 3-4gray, tan, brown
Horsetail Fossilcommonfossil · Mohs 3-5gray, brown, black- No imageHousleyiteraremineral · Mohs 3yellow, brownish-yellow
Howlitecommonmineral · Mohs 3.5white, gray, colorless- No imageHuangiteraremineral · Mohs 3.5yellow, yellowish-brown
Hügeliteraremineral · Mohs 3-4orange, orange-red, brown- No imageHuizingite-(Al)raremineral · Mohs 2-3yellow, yellowish-orange
Hulsiteraremineral · Mohs 3.5black, brownish-black
Humberstoniteraremineral · Mohs 2.5colorless, white, gray- No imageHunchuniteraremineral · Mohs 3-3.5white, silver-white
Hungchaoiteraremineral · Mohs 2-3colorless, white, yellowish
Hureauliteuncommonmineral · Mohs 3.5orange, pink, yellow
Hydrocerussiteraremineral · Mohs 3.5white, colorless, gray- No imageHydrodelhayeliteraremineral · Mohs 3colorless, white
Hydrodresseriteraremineral · Mohs 3white, colorless
Hydroglauberiteraremineral · Mohs 2-3colorless, white, gray
Hydromagnesitecommonmineral · Mohs 3.5white, colorless, grayish
Hydroniumjarositeuncommonmineral · Mohs 2.5-3.5yellow, brownish-yellow, ochre-yellow- No imageHydroniumpharmacoalumiteraremineral · Mohs 2.5white, yellow, greenish yellow
- No imageHydroniumpharmacosideriteraremineral · Mohs 2.5yellow, green, brown
- No imageHydronováčekiteraremineral · Mohs 2-2.5yellow, greenish-yellow
Hydroscarbroiteraremineral · Mohs 2-3white- No imageHydroxylhedyphaneraremineral · Mohs 3.5-4white, colorless, yellow
- No imageHydroxylpyromorphiteraremineral · Mohs 3.5-4yellow, brown, green
Hydrozincitecommonmineral · Mohs 2-2.5white, grayish-white, yellowish-white- No imageHylbrowniteraremineral · Mohs 3-3.5yellow, yellow-orange
- No imageHyttsjöiteraremineral · Mohs 3yellow, yellow-brown
Ianbruceiteraremineral · Mohs 2-3colorless, white
Iangreyiteraremineral · Mohs 3white, pale yellow
Ianthiniteraremineral · Mohs 2-3deep violet, dark purple
Idaiteraremineral · Mohs 3reddish-brown, bronze, copper-red
Ikaiteraremineral · Mohs 2.5colorless, white, gray
Ilímaussite-(Ce)raremineral · Mohs 3.5yellow, brown, pale yellow- No imageIlinskiteraremineral · Mohs 3yellow, orange, brown
- No imageIlirneyiteraremineral · Mohs 3-3.5yellow, yellowish-white
Imayoshiiteraremineral · Mohs 3-4colorless, white
Imiteriteraremineral · Mohs 2.5silver-white, gray- No imageInaglyiteraremineral · Mohs 2.5-3lead-gray, steel-gray
Inderboriteraremineral · Mohs 3.5colorless, white
Inderiteuncommonmineral · Mohs 2.5-3white, colorless, yellowish
Inditeraremineral · Mohs 3.5iron-black, dark gray- No imageInneliteraremineral · Mohs 3-4yellow, brown, golden-yellow
Insect in Ambercommonfossil · Mohs 2-2.5yellow, orange, brown- No imageIntersiliteraremineral · Mohs 3-4white, colorless
Iraniteraremineral · Mohs 3.5orange, yellow
Irhtemiteraremineral · Mohs 3white, colorless, pinkish
Iridarseniteraremineral · Mohs 3.5silver-white
Iridescent Ammoniterarefossil · Mohs 3.5-4iridescent, red, green- No imageIshiharaiteraremineral · Mohs 3-4gray, black
- No imageIsoclasiteraremineral · Mohs 3.5white, colorless
Isocubaniteraremineral · Mohs 3.5brass-yellow, bronze-yellow
Isomertieiteraremineral · Mohs 3.5white, light yellow, silver-white
Isseliteraremineral · Mohs 2.5white, yellowish-white- No imageItelmeniteraremineral · Mohs 3white, colorless, yellowish
- No imageItoiteraremineral · Mohs 2.5white, colorless, yellow
- No imageIvanyukite-Curaremineral · Mohs 3-4green, yellowish-green
- No imageIvanyukite-Nararemineral · Mohs 3-4yellow, yellowish-orange
- No imageIzoklakeiteraremineral · Mohs 3.5lead-gray, blackish-gray
- No imageJáchymoviteraremineral · Mohs 2-3yellow, yellow-orange, orange
- No imageJacquesdietrichiteraremineral · Mohs 2-3blue, green-blue
Jadariteraremineral · Mohs 3white, colorless
Jaffeiteraremineral · Mohs 3.5colorless, white
Jagoiteraremineral · Mohs 3yellow, yellowish-orange- No imageJagüéiteraremineral · Mohs 2-3dark gray, black
Jahnsite-(CaMnMn)raremineral · Mohs 3-4yellow, yellowish-brown, brown
Jahnsite-(MnMnFe)raremineral · Mohs 3-4yellow, yellowish-brown, brown
Jahnsite-(NaFeMg)raremineral · Mohs 3-4yellow, yellowish-brown, brown
Jakobssoniteraremineral · Mohs 3.5colorless, white
Jalpaiteraremineral · Mohs 2-2.5lead-gray, iron-black
Jamesoniteuncommonmineral · Mohs 2.5dark gray, lead gray
Jancheviteraremineral · Mohs 3yellow, yellowish-orange
Jangguniteraremineral · Mohs 3-4black, dark brown- No imageJarandoliteraremineral · Mohs 3.5white, colorless
Jarliteraremineral · Mohs 3.5-4colorless, white, gray- No imageJarosewichiteraremineral · Mohs 3-4dark red, brownish-red
Jarositecommonmineral · Mohs 2.5-3.5yellow, yellowish-brown, brown
Jaskólskiiteraremineral · Mohs 3.5lead-gray, tin-white
Jasmunditeraremineral · Mohs 3.5yellow, brownish-yellow- No imageJasrouxiteraremineral · Mohs 2.5-3gray, dark gray, lead-gray
Jeanbandyiteraremineral · Mohs 3-4yellow, yellowish-brown, brown- No imageJeankempiteraremineral · Mohs 2-3white, colorless
- No imageJedwabiteraremineral · Mohs 3.5-4silver-white, gray
Jenniteraremineral · Mohs 2.5white, pink, brownish
Jenseniteraremineral · Mohs 3.5blue, greenish-blue- No imageJentschiteraremineral · Mohs 3-3.5lead-gray, black
Jetcommonfossil · Mohs 2.5-4black, dark brown- No imageJežekiteraremineral · Mohs 3.5white, colorless
Jinshajiangiteraremineral · Mohs 3-4brown, yellow-brown, dark brown- No imageJoëlbruggeriteraremineral · Mohs 3yellow, yellowish-green
Johilleriteraremineral · Mohs 3.5yellow, yellow-green
Johnwalkiteraremineral · Mohs 3.5yellow, brown
Jôkokuiteraremineral · Mohs 2-3pink, pale pink, colorless- No imageJonassoniteraremineral · Mohs 2.5lead-gray, silver-white
- No imageJonesiteraremineral · Mohs 3-4colorless, white, pale yellow
Jordaniteraremineral · Mohs 3lead-gray, black- No imageJørgenseniteraremineral · Mohs 3.5colorless, white, pale yellow
- No imageJörgkelleriteraremineral · Mohs 3-4colorless, white
Jouravskiteraremineral · Mohs 2-3yellow, yellowish-orange- No imageJuabiteraremineral · Mohs 2.5-3light green, pale blue-green
Juangodoyiteraremineral · Mohs 2.5colorless, white- No imageJuaniteraremineral · Mohs 3.5white, pale yellow
Jungiteraremineral · Mohs 3yellow, pale yellow
Junoiteraremineral · Mohs 2.5lead-gray
Juonniiteraremineral · Mohs 3-4white, colorless- No imageJusiteraremineral · Mohs 3-4white, colorless
- No imageKadyreliteraremineral · Mohs 2-3yellow, yellowish-green
Kahlenbergiteraremineral · Mohs 3white, colorless- No imageKahleriteraremineral · Mohs 2-2.5yellow, yellow-green
Kainitecommonmineral · Mohs 2.5-3colorless, white, yellow- No imageKalgoorlieiteraremineral · Mohs 2-3white, gray
Kaliciniteraremineral · Mohs 2.5white, colorless- No imageKalininiteraremineral · Mohs 3.5-4dark gray, black
- No imageKaliochalciteraremineral · Mohs 3.5yellow, yellowish-green, emerald-green
Kalistrontiteraremineral · Mohs 3colorless, white
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