Rare rocks & minerals
Rare rocks and minerals occur in only a handful of localities worldwide, or in such small quantities that good specimens command serious money. These are the trophy pieces of cabinet collectors.
Showing 2761–2880 of 4900 rare entries (page 24 of 41).
Mcbirneyiteraremineral · Mohs 2.5-3deep blue, blue-green
Mcconnelliteraremineral · Mohs 3dark gray, black- No imageMccrillisiteraremineral · Mohs 3.5pink, colorless, white
Mcgilliteraremineral · Mohs 5-6reddish-brown, pinkish-red
Mcgoverniteraremineral · Mohs 2.5bronze-brown, yellow-brown, orange-brown
Mcguinnessiteraremineral · Mohs 2.5blue, greenish-blue, light blue
Mckelveyite-(Nd)raremineral · Mohs 4greenish-yellow, yellowish-brown, brown
Mckelveyite-(Y)raremineral · Mohs 3.5yellow, yellowish-brown, greenish-yellow
Mckinstryiteraremineral · Mohs 2.5iron-black, steel-gray
Mcneariteraremineral · Mohs 2white, colorless
Medaiteraremineral · Mohs 5-6pink, reddish-pink- No imageMedenbachiteraremineral · Mohs 4orange, reddish-orange, brown
- No imageMegacycliteraremineral · Mohs 3white, colorless
- No imageMegakalsiliteraremineral · Mohs 6colorless, white
- No imageMegawiteraremineral · Mohs 4colorless, white
Meieraniteraremineral · Mohs 7-7.5yellow, brown- No imageMeieriteraremineral · Mohs 3.5colorless, white
- No imageMeisseriteraremineral · Mohs 3yellow, orange-yellow
- No imageMeitneriteraremineral · Mohs 3white, gray
Meixneriteraremineral · Mohs 1.5-2white, colorless, yellowish-white
Mejillonesiteraremineral · Mohs 3yellow, yellowish-brown- No imageMelanarsiteraremineral · Mohs 3.5deep red, dark brown, black
Melanocerite-(Ce)raremineral · Mohs 5-6brown, reddish-brown, dark red
Melanophlogiteraremineral · Mohs 6-6.5colorless, white, yellow
Melanostibiteraremineral · Mohs 5.5-6black
Melanotekiteraremineral · Mohs 6.5black, brownish-black
Melanothalliteraremineral · Mohs 3black, dark blue
Melanovanaditeraremineral · Mohs 2.5black, dark brown- No imageMelcheriteraremineral · Mohs 5yellow, brownish-yellow
Meliphaniteraremineral · Mohs 5-5.5yellow, yellowish-white, brown
Melkoviteraremineral · Mohs 2yellow, yellowish-green- No imageMelliniiteraremineral · Mohs 5-6white, gray
Melliteraremineral · Mohs 2-2.5honey-yellow, brownish, reddish-yellow- No imageMellizinkaliteraremineral · Mohs 2white, colorless
Meloniteraremineral · Mohs 1-1.5reddish-white, silver-white- No imageMélonjosephiteraremineral · Mohs 3.5-4black, dark brown
- No imageMenchettiiteraremineral · Mohs 2lead-gray, black
- No imageMendeleevite-(Ce)raremineral · Mohs 5dark brown, black, reddish-brown
- No imageMendeleevite-(Nd)raremineral · Mohs 5-6brown, yellow-brown, reddish-brown
Mendigiteraremineral · Mohs 4.5-5gray, white, colorless
Mendipiteraremineral · Mohs 2.5white, yellow, light yellow- No imageMendozavilite-KCararemineral · Mohs 2yellow, orange, brown
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 imageMengeiteraremineral · Mohs 7.5black, brown
- No imageMengxianminiteraremineral · Mohs 3-4yellow, brownish-yellow
- No imageMeniayloviteraremineral · Mohs 2colorless, white, yellow
- No imageMenshikoviteraremineral · Mohs 3.5-4white, pale yellow
- No imageMenzerite-(Y)raremineral · Mohs 7-7.5brown, black
Mercalliteraremineral · Mohs 2white, colorless- No imageMercuryraremineral · Mohs inapplicablesilver-white
- No imageMereheaditeraremineral · Mohs 2colorless, white, pale yellow
- No imageMereiteriteraremineral · Mohs 2.5colorless, white, yellowish-white
- No imageMerenskyiteraremineral · Mohs 1.5-2white, pale yellow
Meridianiiteraremineral · Mohs 2colorless, white
Merlinoiteraremineral · Mohs 4white, colorless, pale yellow- No imageMerrihueiteraremineral · Mohs 5-6blue, blue-green, green
Merrilliteraremineral · Mohs 5colorless, white- No imageMertieiteraremineral · Mohs 3.5white, pale yellow
Merwiniteraremineral · Mohs 6colorless, white, pale green- No imageMesaiteraremineral · Mohs 3-4red, reddish-orange
Mesosideriterareigneous · Mohs 5-6silver, gray, black
Messeliteraremineral · Mohs 3colorless, white, pale yellow
Meta-aluminiteraremineral · Mohs 1-2white
Meta-alunogenraremineral · Mohs 2white, colorless, pale yellow- No imageMeta-ankoleiteraremineral · Mohs 2.5yellow, yellowish-green
- No imageMetaboriteraremineral · Mohs 4white, colorless
- No imageMetacalciouranoiteraremineral · Mohs 3-4yellow, orange, brown
- No imageMetadelrioiteraremineral · Mohs 2yellow, greenish-yellow
- No imageMetahaiweeiteraremineral · Mohs 2-3yellow, pale yellow, white
Metaheinrichiteraremineral · Mohs 2.5yellow, yellow-green
Metahewettiteraremineral · Mohs 1.5-2dark red, deep red- No imageMetahohmanniteraremineral · Mohs 2.5-3yellow, brownish-yellow
Metakahleriteraremineral · Mohs 2-3yellow, yellow-green- No imageMetakirchheimeriteraremineral · Mohs 2-2.5pink, pale pink, rose
- No imageMetaköttigiteraremineral · Mohs 2yellow, yellowish-orange
- No imageMetalodèviteraremineral · Mohs 2-2.5yellow, greenish-yellow
Metamuniriteraremineral · Mohs 2yellow, orange-yellow- No imageMetanatroautuniteraremineral · Mohs 2-2.5yellow, yellow-green
Metanováčekiteraremineral · Mohs 2.5yellow, yellow-green
Metarauchiteraremineral · Mohs 2yellow, yellow-green
Metarossiteraremineral · Mohs 2yellow, orange-yellow
Metasaléeiteraremineral · Mohs 2.5yellow, yellow-green
Metaschoderiteraremineral · Mohs 2yellow, orange
Metaschoepiteraremineral · Mohs 2.5yellow, pale yellow
Metasideronatriteraremineral · Mohs 2.5yellow, orange-yellow
Metastibniteraremineral · Mohs 2red, reddish-brown- No imageMetastudtiteraremineral · Mohs 2yellow, pale yellow, white
Metaswitzeriteraremineral · Mohs 2yellow, brownish-yellow, pale orange- No imageMetatamboiteraremineral · Mohs 2-3yellow, yellow-orange, brown
- No imageMetathénarditeraremineral · Mohs 2.5white, colorless, grayish
Metatyuyamuniteraremineral · Mohs 2yellow, yellowish-green- No imageMetauramphiteraremineral · Mohs 2-2.5yellow, greenish-yellow
- No imageMetauranocirciteraremineral · Mohs 2-2.5yellow, yellow-green
- No imageMetauranopiliteraremineral · Mohs 2-3yellow, yellow-green
- No imageMetauranospiniteraremineral · Mohs 2.5yellow, yellow-green
- No imageMetavandendriesscheiteraremineral · Mohs 3yellow, orange-yellow
Metavanmeersscheiteraremineral · Mohs 2-3yellow, bright yellow- No imageMetavanuraliteraremineral · Mohs 2yellow, bright yellow
Metavarisciteraremineral · Mohs 3.5-4green, yellow-green
Metavauxiteraremineral · Mohs 3colorless, white, pale green
Metavivianiteraremineral · Mohs 1.5-2dark green, blue-green, brown- No imageMetavoltineraremineral · Mohs 2.5yellow, orange, brown
- No imageMetazelleriteraremineral · Mohs 2-3yellow, pale yellow
Meteoritesrareigneous · Mohs 5-8black, brown, gray
Meurigite-Kraremineral · Mohs 3-4yellow, yellow-brown, brownish-orange
Meurigite-Nararemineral · Mohs 3-4yellow, brownish-yellow, orange-yellow- No imageMeymaciteraremineral · Mohs 2-3yellow, yellowish-green, brown
- No imageMeyrowitziteraremineral · Mohs 2yellow, pale yellow
Mgriiteraremineral · Mohs 4.5white, gray- No imageMianningiteraremineral · Mohs 5-5.5black, brownish-black
Miargyriteraremineral · Mohs 2.5iron-black, steel-gray
Miassiteraremineral · Mohs 3.5-4silver-white, gray
Micheelseniteraremineral · Mohs 3colorless, white, pale blue
Micheneriteraremineral · Mohs 2.5-3white, cream-white
Microsommiteraremineral · Mohs 6colorless, white, yellow- No imageMiddendorfiteraremineral · Mohs 4dark brown, black
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