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 2161–2280 of 2721 rocks (page 19 of 23).
- No imageSchlemaiteraremineral · Mohs 2.5lead-gray, white
Schlossmacheriteraremineral · Mohs 3.5-4yellow, yellow-green, brownish-yellow
Schmiditeraremineral · Mohs 3yellow, brownish-yellow
Schmiederiteraremineral · Mohs 3.5red, orange-red, dark red
Schmitteriteraremineral · Mohs 3yellow, pale yellow
Schneiderhöhniteraremineral · Mohs 3.5dark brown, black
Schoenfliesiteraremineral · Mohs 3.5yellow, brownish-yellow, pale yellow
Schoepiteraremineral · Mohs 2.5yellow, amber-yellow
Schooneriteraremineral · Mohs 3-4yellow, brown
Schröckingeriteuncommonmineral · Mohs 2.5yellow, greenish yellow
Schubneliteraremineral · Mohs 2-3yellow, orange-yellow
Schuetteiteraremineral · Mohs 2-3bright yellow, orange-yellow
Schuilingite-(Nd)raremineral · Mohs 3.5blue, turquoise-blue, azure
Schulteniteraremineral · Mohs 2.5colorless, white, pale yellow
Schwartzembergiteraremineral · Mohs 2.5dark red, reddish brown, brown
Schwertmannitecommonmineral · Mohs 2-3yellow, brown, orange- No imageSclariteraremineral · Mohs 3.5colorless, white
Scoroditeuncommonmineral · Mohs 3.5-4light green, pale blue, yellowish brown- No imageScorticoiteraremineral · Mohs 3.5white
- No imageScotlanditeraremineral · Mohs 2-2.5colorless, white, pale yellow
Scottyiteraremineral · Mohs 3-4dark brown, black
Sea Urchin Fossilcommonfossil · Mohs 3-5white, gray, tan
Searlesiteuncommonmineral · Mohs 3.5white, colorless, gray
Sederholmiteraremineral · Mohs 3-3.5bronze, pale brass-yellow- No imageSedoviteraremineral · Mohs 2-3yellow, light yellow, whitish
Seeligeriteraremineral · Mohs 2.5-3canary yellow, golden yellow
Seeliteraremineral · Mohs 2-3yellow, lemon yellow
Seidite-(Ce)raremineral · Mohs 3yellow, brown- No imageSejkoraite-(Y)raremineral · Mohs 3yellow, greenish-yellow
- No imageSelenojalpaiteraremineral · Mohs 2.5black, gray
- No imageSelenopolybasiteraremineral · Mohs 2.5-3black, iron-black
- No imageSelenostephaniteraremineral · Mohs 2-2.5black, iron-black
Seligmanniteraremineral · Mohs 3lead-gray, black- No imageSelivanovaiteraremineral · Mohs 3-4yellow, brown
- No imageSelwyniteraremineral · Mohs 2.5yellow, green, brown
Semenovite-(Ce)raremineral · Mohs 3-4yellow, yellow-brown, brown
Semseyiteuncommonmineral · Mohs 2.5lead-gray- No imageSenandoriteraremineral · Mohs 3-4gray, dark gray, black
Senarmontiteuncommonmineral · Mohs 2.5white, colorless, gray
Senegaliteraremineral · Mohs 3.5yellow, yellowish-green
Sengieriteraremineral · Mohs 2-3yellow, greenish-yellow
Sepiolitecommonmineral · Mohs 2-2.5white, gray, yellow
Septarian Nodulescommonsedimentary · Mohs 3-5brown, yellow, gray
Sergeeviteraremineral · Mohs 2-3white, colorless, pale yellow
Sericitecommonmineral · Mohs 2-2.5white, silver, pale green
Serpentinecommonmineral · Mohs 2.5-5.5green, yellow, brown
Serpentinitecommonmetamorphic · Mohs 2.5-5.5green, yellow-green, black
Serrabrancaiteraremineral · Mohs 3.5white, colorless, pale yellow- No imageSewarditeraremineral · Mohs 3-4dark green, yellow-green
- No imageShabaite-(Nd)raremineral · Mohs 3yellow, pale yellow, orange-yellow
Shabyniteraremineral · Mohs 2-3white, colorless
Shadluniteraremineral · Mohs 3.5-4brass-yellow, bronze
Shakhoviteraremineral · Mohs 2-3yellow, orange-yellow
Shalecommonsedimentary · Mohs 2-3gray, black, red
Shanditeraremineral · Mohs 3.5bronze, pale brass-yellow- No imageShannoniteraremineral · Mohs 3yellow, greenish-yellow
Shark Teethcommonfossil · Mohs 3-5black, brown, gray
Sharpiteraremineral · Mohs 2-3yellow, yellowish-green
Shattuckiteuncommonmineral · Mohs 3.5blue, greenish-blue- No imageShchurovskyiteraremineral · Mohs 3.5yellow, greenish-yellow
- No imageSheldrickiteraremineral · Mohs 3yellow, yellow-orange, brown
Shenzhuangiteraremineral · Mohs 3.5-4white, pale yellow
Shigaiteraremineral · Mohs 2.5yellow, golden yellow, orange yellow- No imageShimazakiiteraremineral · Mohs 3.5colorless, white, pale yellow
- No imageShirokshiniteraremineral · Mohs 2.5-3white, colorless
- No imageShirozuliteraremineral · Mohs 2.5-3brown, dark brown
- No imageShlykoviteraremineral · Mohs 3-4white, colorless
Shomiokite-(Y)raremineral · Mohs 3colorless, white, pale yellow
Shortiteraremineral · Mohs 3colorless, white, yellow- No imageShosanbetsuiteraremineral · Mohs 3.5-4white, colorless, yellow
- No imageShuvaloviteraremineral · Mohs 2.5white, colorless
Sibirskiteraremineral · Mohs 3-4white, colorless, gray- No imageSicheriteraremineral · Mohs 2.5dark gray, lead gray
Siderazotraremineral · Mohs 3-4black, gray
Sideritecommonmineral · Mohs 3.5-4yellow, brown, gray
Sideronatriteraremineral · Mohs 2.5yellow, pale yellow, golden yellow
Siderophylliteuncommonmineral · Mohs 2.5-3black, brown, dark brown
Siderotiluncommonmineral · Mohs 2.5white, pale blue, pale green
Sieleckiiteraremineral · Mohs 3blue, azure-blue
Sigloiteraremineral · Mohs 3.5yellow, brownish-yellow, colorless- No imageSilinaiteraremineral · Mohs 2.5white, colorless
Silléniteraremineral · Mohs 3.5-4yellow, yellowish-orange, brown
Siltstonecommonsedimentary · Mohs 3-4gray, red, brown
Silveruncommonmineral · Mohs 2.5-3silver-white, gray, black- No imageSimmonsiteraremineral · Mohs 3.5colorless, white, pale yellow
Simonkolleiteraremineral · Mohs 2.5white, colorless, pale gray
Sinkankasiteraremineral · Mohs 3.5colorless, white, pale yellow
Sinneriteraremineral · Mohs 3.5gray, black
Sitinakiteraremineral · Mohs 3-4colorless, white- No imageSiwaqaiteraremineral · Mohs 3white, colorless
- No imageSkaergaarditeraremineral · Mohs 3.5white
Skinneriteraremineral · Mohs 2.5-3gray, black
Sklodowskiteuncommonmineral · Mohs 2-3yellow, pale yellow, greenish-yellow
Skorpioniteraremineral · Mohs 3white, colorless
Slatecommonmetamorphic · Mohs 2.5-4gray, black, green
Slavíkiteraremineral · Mohs 2.5yellow, yellow-green- No imageSlavkoviteraremineral · Mohs 3white, colorless, pale blue
- No imageSmamiteraremineral · Mohs 3.5colorless, white
Smirniteraremineral · Mohs 3yellow, brownish-yellow
Smolyaninoviteraremineral · Mohs 2-3yellow, yellowish-orange
Smrkoveciteraremineral · Mohs 3.5-4yellow, yellowish-orange
Smythiteraremineral · Mohs 3.5bronze, brown, gray
Sobolevskiteraremineral · Mohs 3.5white, pinkish-white
Soddyiteraremineral · Mohs 3.5yellow, yellow-orange, brownish-yellow
Söhngeiteraremineral · Mohs 3.5colorless, white, pale yellow- No imageSokolovaiteraremineral · Mohs 2.5colorless, white, pinkish
Solongoiteraremineral · Mohs 3.5white, colorless, yellow
Sonoraiteraremineral · Mohs 2-3green, yellow-green
Sopcheiteraremineral · Mohs 2.5grayish-white, silver-white
Sorbyiteraremineral · Mohs 3.5lead-gray, grayish-white
Sorositeraremineral · Mohs 3.5-4silver-white, tin-white
Sosedkoiteraremineral · Mohs 3.5yellow, yellowish-orange- No imageSoučekiteraremineral · Mohs 3.5gray, lead-gray
Spadaiteraremineral · Mohs 2.5red, pink, yellow
Spaltiiteraremineral · Mohs 2.5-3lead-gray, black
Spangoliteraremineral · Mohs 3dark green, emerald green, bluish green
Spenceriteraremineral · Mohs 2.5white, colorless, gray- No imageSphaerobismoiteraremineral · Mohs 3.5white, yellowish-white, gray
Sphaleritecommonmineral · Mohs 3.5-4yellow, brown, black
Spherocobaltiteraremineral · Mohs 3.5-4rose-red, pink, reddish-orange
Identify your specimen
Open RockHoundR to compare hardness, streak, and locality against your find.
