Mineral rocks & minerals
Minerals are naturally occurring inorganic solids with a defined chemical composition and crystalline structure. They are the building blocks of every rock you pick up in the field.
Showing 3841–3960 of 5834 minerals (page 33 of 49).
Omsiteraremineral · Mohs 2yellow, greenish-yellow
Ondrušiteraremineral · Mohs 4white, colorless- No imageOneilliteraremineral · Mohs 3-4brown, yellow-brown
Onoratoiteraremineral · Mohs 2colorless, white, yellow
Onyxcommonmineral · Mohs 6.5-7black, white, banded- No imageOolitic Agatescommonmineral · Mohs 6.5-7white, gray, brown
Oosterboschiteraremineral · Mohs 3-3.5white, pale yellow
Opalcommonmineral · Mohs 5.5-6.5white, black, colorless- No imageOpal-quartzcommonmineral · Mohs 6.5-7white, gray, brown
Opalitecommonmineral · Mohs 5.5-6.5white, blue, milky- No imageOphiriteraremineral · Mohs 2yellow, yellowish-orange
- No imageOppenheimeriteraremineral · Mohs 2-3yellow, pale yellow
Optical Calcitecommonmineral · Mohs 3colorless, white- No imageOrange Agatecommonmineral · Mohs 6.5-7orange, red-orange, yellow-orange
Orbicular Jaspercommonmineral · Mohs 6.5-7green, yellow, brown
Orceliteraremineral · Mohs 3.5-4pale bronze, yellowish-white
Ordoñeziteraremineral · Mohs 6-6.5yellowish brown, brown, dark brown
Orecommonmineralvariable
Örebroiteraremineral · Mohs 5-6black, brownish-black
Oregon Jadecommonmineral · Mohs 6.5-7green, olive-green, dark green
Oregoniteraremineral · Mohs 4.5-5white, pale metallic yellow- No imageOrganovaite-Mnraremineral · Mohs 5yellow, brown, pink
Organovaite-Znraremineral · Mohs 5yellow, brown, orange- No imageOrickiteraremineral · Mohs 2.5dark brown, black, gray
Orientiteraremineral · Mohs 3.5-4brown, dark brown- No imageOrlandiiteraremineral · Mohs 2yellow, pale yellow
- No imageOrloviteraremineral · Mohs 2.5-3colorless, pale yellow, white
Orlymaniteraremineral · Mohs 4white, pale pink
Orpimentcommonmineral · Mohs 1.5-2yellow, orange, brownish-yellow
Orschalliteraremineral · Mohs 2colorless, white- No imageOrthobranneriteraremineral · Mohs 4-5black, brownish-black
Orthoclasecommonmineral · Mohs 6white, colorless, flesh-red- No imageOrthocuproplatinumraremineral · Mohs 4white, silver-white
- No imageOrthogersdorffiteraremineral · Mohs 5.5-6white, steel-gray, silver-white
- No imageOrthojoaquinite-(Ce)raremineral · Mohs 5-5.5brown, yellowish-brown, orange-brown
- No imageOrthojoaquinite-(La)raremineral · Mohs 5-5.5yellow, brown, orange-brown
- No imageOrthominasragriteraremineral · Mohs 2.5blue, light blue
Orthopinakioliteraremineral · Mohs 6black, brownish-black
Orthoserpieriteraremineral · Mohs 2blue, pale blue, greenish blue- No imageOrthowalpurgiteraremineral · Mohs 3-4yellow, orange-yellow
- No imageOsakaiteraremineral · Mohs 2colorless, white
Osarizawaiteraremineral · Mohs 3.5yellow, greenish-yellow- No imageOsarsiteraremineral · Mohs 6lead-gray, silver-white
- No imageOsborniteraremineral · Mohs 8-9gold, yellow
- No imageOscarkempffiteraremineral · Mohs 2.5-3lead-gray, black
- No imageOskarssoniteraremineral · Mohs 1-2white, colorless
Osumiliteraremineral · Mohs 5-5.5blue, blue-violet, colorless- No imageOsumilite-(Mg)raremineral · Mohs 7colorless, pale blue, blue-gray
- No imageOswaldpeetersiteraremineral · Mohs 2yellow, greenish-yellow
Otaviteraremineral · Mohs 3.5white, gray, yellowish
Otjisumeiteraremineral · Mohs 3yellow, pale yellow
Ottemanniteraremineral · Mohs 1.5-2yellow, orange-yellow
Ottensiteraremineral · Mohs 2red, orange-red
Ottohahniteraremineral · Mohs 2yellow, yellowish-orange- No imageOttoiteraremineral · Mohs 2-3yellow, pale yellow
Ottreliteuncommonmineral · Mohs 6.5dark green, black, gray-green
Ottréliteuncommonmineral · Mohs 6.5dark gray, dark green, black
Otwayiteraremineral · Mohs 2.5bright green, pale green
Oulankaiteraremineral · Mohs 3.5-4brass-yellow, grayish-yellow
Ourayiteraremineral · Mohs 2.5lead-gray, steel-gray
Oursiniteraremineral · Mohs 2-3yellow, yellowish-green
Ovamboiteraremineral · Mohs 3-3.5grayish white- No imageOveriteraremineral · Mohs 4colorless, white, pale yellow
- No imageOwensiteraremineral · Mohs 3.5brass-yellow, bronze
- No imageOwyhee Jaspercommonmineral · Mohs 6.5-7blue, brown, cream
- No imageOwyhee Thundereggcommonmineral · Mohs 6.5-7blue, purple, white
Owyheeiteraremineral · Mohs 2.5steel-gray, silver-white, gray
Oxammiteraremineral · Mohs 2.5white, colorless
Oxo-magnesio-hastingsiteraremineral · Mohs 5-6black, dark green, brown- No imageOxo-mangani-leakeiteraremineral · Mohs 6dark blue, dark violet
- No imageOxy-chromium-draviteraremineral · Mohs 7dark green, emerald green
- No imageOxy-draviteraremineral · Mohs 7dark brown, reddish-brown, black
- No imageOxy-schorlraremineral · Mohs 7black, brownish-black
Oxy-vanadium-draviteraremineral · Mohs 7dark brown, black, dark yellow-brown- No imageOxycalciomicroliteraremineral · Mohs 5-5.5yellow, brown, reddish-brown
Oxycalciopyrochloreraremineral · Mohs 5-5.5brown, yellowish-brown, black
Oxycalcioroméiteraremineral · Mohs 5-5.5yellow, brown, yellow-brown- No imageOxykinoshitaliteraremineral · Mohs 2.5-3dark brown, reddish brown
- No imageOxynatromicroliteraremineral · Mohs 5-5.5yellow, brown, colorless
- No imageOxyphlogopiteraremineral · Mohs 2.5-3brown, reddish-brown, dark-brown
- No imageOxyplumbopyrochloreraremineral · Mohs 5-5.5yellow, brown, reddish-brown
Oxyplumboroméiteraremineral · Mohs 5-5.5yellow, brown, colorless- No imageOxystannomicroliteraremineral · Mohs 5-5.5yellow, brown, reddish-brown
- No imageOxystibiomicroliteraremineral · Mohs 5-5.5yellow, brown, white
- No imageOxyvaniteraremineral · Mohs 5.5-6black, brownish black
Oyeliteraremineral · Mohs 4white, colorless
Oyoniteraremineral · Mohs 3-4black, dark brown
Ozokeriteuncommonmineral · Mohs 1yellow, brown, black
Pääkköneniteraremineral · Mohs 2-3lead-gray, silver-gray- No imagePaariteraremineral · Mohs 3.5lead-gray, iron-black
Pabstiteraremineral · Mohs 6white, colorless, gray- No imagePaceiteraremineral · Mohs 2colorless, white
Pachnoliteuncommonmineral · Mohs 3colorless, white, grayish- No imagePackratiteraremineral · Mohs 2.5yellow, orange, brown
Paddlewheeliteraremineral · Mohs 2yellow, greenish-yellow
Padĕraiteraremineral · Mohs 2.5steel-gray, lead-gray- No imagePadmaiteraremineral · Mohs 3-4white, pale yellow
- No imagePaganoiteraremineral · Mohs 4yellow, yellowish-green, brown
- No imagePahasapaiteraremineral · Mohs 3yellow, pink, white
Painiteraremineral · Mohs 8dark red, brownish-red, orange-brown- No imagePakhomovskyiteraremineral · Mohs 2white, colorless, pale yellow
Palarstanideraremineral · Mohs 3-4brass-yellow, golden-yellow
Palenzonaiteraremineral · Mohs 6-6.5orange, reddish-orange
Palermoiteraremineral · Mohs 5.5colorless, white, pale yellow- No imagePalladiniteraremineral · Mohs 2yellow, orange, brown
Palladiumraremineral · Mohs 4.75-5silver-white, pale gray- No imagePalladoarsenideraremineral · Mohs 3.5-4tin-white, light gray
- No imagePalladobismutharsenideraremineral · Mohs 3.5white, gray
- No imagePalladodymiteraremineral · Mohs 5white, light gray
- No imagePalladosilicideraremineral · Mohs 5-5.5silver-white, gray
Palladseiteraremineral · Mohs 3-4white, gray- No imagePalmieriteraremineral · Mohs 3colorless, white, gray
Palygorskitecommonmineral · Mohs 2-3white, gray, yellowish-white
Pampaloiteraremineral · Mohs 1.5yellow, brownish-yellow- No imagePanasqueiraiteraremineral · Mohs 4yellow, brownish-yellow
- No imagePandoraite-Bararemineral · Mohs 2-3white, colorless
- No imagePandoraite-Cararemineral · Mohs 2yellow, pale yellow
- No imagePanethiteraremineral · Mohs 3.5yellow, yellowish-brown
- No imagePanguiteraremineral · Mohs nulldeep reddish-brown, black
- No imagePanichiiteraremineral · Mohs 2.5yellow, white, colorless
Identify minerals in the field
Open RockHoundR to look up properties offline and find rockhounding spots near you.
