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 1801–1920 of 2721 rocks (page 16 of 23).
Oursiniteraremineral · Mohs 2-3yellow, yellowish-green
Ovamboiteraremineral · Mohs 3-3.5grayish white- No imageOwensiteraremineral · Mohs 3.5brass-yellow, bronze
Owyheeiteraremineral · Mohs 2.5steel-gray, silver-white, gray
Oxammiteraremineral · Mohs 2.5white, colorless- No imageOxykinoshitaliteraremineral · Mohs 2.5-3dark brown, reddish brown
- No imageOxyphlogopiteraremineral · Mohs 2.5-3brown, reddish-brown, dark-brown
Oyoniteraremineral · Mohs 3-4black, dark brown
Pääkköneniteraremineral · Mohs 2-3lead-gray, silver-gray- No imagePaariteraremineral · Mohs 3.5lead-gray, iron-black
Pachnoliteuncommonmineral · Mohs 3colorless, white, grayish- No imagePackratiteraremineral · Mohs 2.5yellow, orange, brown
Padĕraiteraremineral · Mohs 2.5steel-gray, lead-gray- No imagePadmaiteraremineral · Mohs 3-4white, pale yellow
- No imagePahasapaiteraremineral · Mohs 3yellow, pink, white
Palarstanideraremineral · Mohs 3-4brass-yellow, golden-yellow- No imagePalladoarsenideraremineral · Mohs 3.5-4tin-white, light gray
- No imagePalladobismutharsenideraremineral · Mohs 3.5white, gray
Palladseiteraremineral · Mohs 3-4white, gray- No imagePalmieriteraremineral · Mohs 3colorless, white, gray
Palygorskitecommonmineral · Mohs 2-3white, gray, yellowish-white- No imagePandoraite-Bararemineral · Mohs 2-3white, colorless
- No imagePanethiteraremineral · Mohs 3.5yellow, yellowish-brown
- No imagePanichiiteraremineral · Mohs 2.5yellow, white, colorless
- No imagePaoloviteraremineral · Mohs 3.5-4white, silver-white
Papagoiteraremineral · Mohs 3-4bright blue, sky blue
Para-alumohydrocalciteraremineral · Mohs 3white, colorless, pale yellow- No imageParabrandtiteraremineral · Mohs 3.5colorless, white, yellowish-white
Parabutleriteraremineral · Mohs 2.5orange, yellow
Paracoquimbiteraremineral · Mohs 2-3violet, pale violet, white
Paracostibiteraremineral · Mohs 3.5-4white, gray
Paradamiteraremineral · Mohs 3.5yellow, colorless, white- No imageParadocrasiteraremineral · Mohs 3-4silver-white, tin-white
- No imageParaershoviteraremineral · Mohs 2-3yellow, brownish-yellow
Parafransoletiteraremineral · Mohs 3white, colorless- No imageParageorgbokiiteraremineral · Mohs 3.5dark red, brown
Paragonitecommonmineral · Mohs 2.5colorless, white, yellowish
Paraguanajuatiteraremineral · Mohs 2-2.5lead-gray, steel-gray
Parahopeiteraremineral · Mohs 3.5colorless, white, yellowish-white- No imageParalammeriteraremineral · Mohs 3yellow, brownish-yellow
Paralaurioniteraremineral · Mohs 2.5colorless, white
Paralomonosoviteraremineral · Mohs 3-4brown, yellowish-brown, reddish-brown
Paramelaconiteraremineral · Mohs 3black, brownish-black
Paraniite-(Y)raremineral · Mohs 3-4yellow, yellowish-orange- No imageParaotwayiteraremineral · Mohs 3green, yellow-green
- No imagePararaisaiteraremineral · Mohs 2-3blue, green
Pararammelsbergiteraremineral · Mohs 2-3white, light pink, silver white
Pararobertsiteraremineral · Mohs 3-4white, pale yellow- No imageParaschachneriteraremineral · Mohs 3.5silver-white
Paraschoepiteraremineral · Mohs 2-3yellow, amber-yellow
Parascholziteraremineral · Mohs 3.5colorless, white- No imageParascoroditeraremineral · Mohs 3.5-4white, pale yellow
Parasibirskiteraremineral · Mohs 3-4yellow, brownish-yellow, pale yellow- No imageParasterryiteraremineral · Mohs 3lead-gray, iron-black
Paratacamiteuncommonmineral · Mohs 3dark green, bright green, emerald green
Paratacamite-(Mg)raremineral · Mohs 3green, dark green
Paratacamite-(Ni)raremineral · Mohs 3green, dark green, emerald green- No imageParatimroseiteraremineral · Mohs 2-3yellow, yellowish-orange
Paratooite-(La)raremineral · Mohs 3-4yellow, pale yellow
Parauranophaneraremineral · Mohs 2-3yellow, lemon-yellow, orange-yellow
Paravauxiteraremineral · Mohs 3colorless, white, pale yellow- No imageParawulffiteraremineral · Mohs 3-4blue, greenish-blue
- No imageParkinsoniteraremineral · Mohs 3.5dark brownish-black, black
Parnauiteraremineral · Mohs 2.5blue, greenish-blue, emerald-green
Parsettensiteraremineral · Mohs 3-4reddish-brown, brown, orange-brown
Parsonsiteraremineral · Mohs 2.5-3yellow, white, pale brown
Parwaniteraremineral · Mohs 3.5-4yellow, yellow-brown
Pattersoniteraremineral · Mohs 2.5-3gray, silver-white- No imagePaufleriteraremineral · Mohs 3deep orange, reddish-orange
Pauladamsiteraremineral · Mohs 2.5pale green, light green
Paulkerriteraremineral · Mohs 3-4yellow, yellow-brown, tan
Paulmooreiteraremineral · Mohs 3colorless, white, pale yellow- No imagePauloabibiteraremineral · Mohs 3.5dark brown, black
- No imagePautoviteraremineral · Mohs 3.5yellow, brown, colorless
Paxiteraremineral · Mohs 3.5silver-white, gray
Pearceiteuncommonmineral · Mohs 3black, dark gray
Pearlscommonfossil · Mohs 2.5-4.5white, cream, pink
Peatite-(Y)raremineral · Mohs 3-4white, yellowish-white, grayish-white
Pecoraiteraremineral · Mohs 2.5bright green, apple green
Peisleyiteraremineral · Mohs 3.5white
Pekoiteraremineral · Mohs 3.5-4lead-gray, steel-gray- No imagePéligotiteraremineral · Mohs 2-3yellow, yellow-green
Pellouxiteraremineral · Mohs 2-3black- No imagePenberthycroftiteraremineral · Mohs 3.5yellow, orange, brown
Penfielditeraremineral · Mohs 2.5white, colorless
Penkvilksiteraremineral · Mohs 3.5white, colorless, yellowish-white
Penroseiteraremineral · Mohs 2.5-3lead-gray, blackish-gray
Pentagoniteraremineral · Mohs 3-4deep blue, azure blue
Pentlanditecommonmineral · Mohs 3.5-4bronze-yellow, brownish-yellow
Penzhiniteraremineral · Mohs 2.5silver-white, pale yellow- No imagePeprossiite-(Ce)raremineral · Mohs 3.5colorless, white
Permingeatiteraremineral · Mohs 3.5-4dark gray, black
Perraultiteraremineral · Mohs 3.5dark brown, reddish brown
Peterandreseniteraremineral · Mohs 3-4colorless, white
Petersenite-(Ce)raremineral · Mohs 3.5colorless, white, gray- No imagePetersite-(Ce)raremineral · Mohs 3-4yellow, brown, greenish
- No imagePetersite-(La)raremineral · Mohs 3-4blue, blue-green, green
- No imagePetersite-(Y)raremineral · Mohs 3-4yellow, brown, greenish-yellow
- No imagePetewilliamsiteraremineral · Mohs 3.5green, blue-green
Petoskey Stonescommonfossil · Mohs 3-4gray, brown, tan- No imagePetroviciteraremineral · Mohs 3steel-gray, black
- No imagePetscheckiteraremineral · Mohs 3-4black, brownish black
Petterditeraremineral · Mohs 3.5-4white, colorless, yellowish-white
Petziteraremineral · Mohs 2.5-3steel-gray, iron-black
Phacopscommonfossil · Mohs 3-5brown, gray, black
Pharmacoalumiteraremineral · Mohs 2.5white, yellow, pale green
Pharmacoliteuncommonmineral · Mohs 2-2.5white, colorless, grayish
Pharmacosideriteuncommonmineral · Mohs 2.5yellow, green, brown
Philipsburgiteraremineral · Mohs 2-3bright green, olive green, yellowish green- No imagePhilolithiteraremineral · Mohs 3.5yellow, pale yellow
- No imagePhiloxeniteraremineral · Mohs 3yellow, white, colorless
- No imagePhilrothiteraremineral · Mohs 3lead-gray, black
Phlogopitecommonmineral · Mohs 2.5-3brown, yellowish-brown, reddish-brown
Phoenicochroiteraremineral · Mohs 3-3.5cochineal-red, hyacinth-red, dark red
Phosgeniteraremineral · Mohs 2.5-3colorless, white, gray
Phosphoferriteraremineral · Mohs 3-4colorless, white, pale yellow
Phosphofibriteraremineral · Mohs 3green, yellowish-green
Phosphophylliteraremineral · Mohs 3-3.5colorless, pale green, bluish green
Phosphoritecommonsedimentary · Mohs 3-5gray, brown, black
Phosphorrössleriteraremineral · Mohs 2-3colorless, white
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