Common rocks & minerals
Common rocks and minerals show up routinely in field collecting and on dealer tables. They are the right place to start a reference collection — most are inexpensive, durable, and well-documented.
Showing 1–120 of 780 common entries.
Acanthitecommonmineral · Mohs 2-2.5lead-gray, black
Actinolitecommonmineral · Mohs 5.5-6green, dark green, blackish-green- No imageActinolite Prismscommonmineral · Mohs 5.5-6bright green, dark green, blackish green
Adulariacommonmineral · Mohs 6colorless, white, pale yellow
Aegirinecommonmineral · Mohs 6green, dark green, black
Aegirine-augitecommonmineral · Mohs 6black, greenish-black, dark green
Agatecommonmineral · Mohs 6.5-7white, gray, blue- No imageAgate Nodulescommonmineral · Mohs 6.5-7banded, white, gray
- No imageAgatized Algaecommonfossil · Mohs 6.5-7brown, red, tan
- No imageAgatized Clamscommonfossil · Mohs 6.5-7white, gray, brown
- No imageAgatized Coralcommonfossil · Mohs 6.5-7white, gray, pink
- No imageAgatized Cyad Woodcommonfossil · Mohs 6.5-7brown, red, white
- No imageAgatized Fossil Shellscommonfossil · Mohs 6.5-7white, brown, red
Agatized Fossilscommonfossil · Mohs 6.5-7brown, red, yellow- No imageAgatized Palm Woodcommonfossil · Mohs 6.5-7brown, tan, gray
- No imageAgatized Picture Woodcommonfossil · Mohs 6.5-7brown, tan, black
Agatized Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Alabastercommonmineral · Mohs 2white, colorless, gray
Albitecommonmineral · Mohs 6-6.5white, colorless, gray
Allophanecommonmineral · Mohs 3white, blue, green
Almandinecommonmineral · Mohs 7-7.5dark red, reddish-brown, brownish-black- No imageAlmandine Garnetcommonmineral · Mohs 7-7.5red, brownish-red, deep red
- No imageAlmanditecommonmineral · Mohs 7-7.5dark red, brownish red, violet red
Alumcommonmineral · Mohs 2-2.5white, colorless, yellowish
Alum-(K)commonmineral · Mohs 2-2.5colorless, white, grayish
Alunitecommonmineral · Mohs 3.5-4white, gray, pink
Alunogencommonmineral · Mohs 1.5-2white, yellowish, reddish
Amazonitecommonmineral · Mohs 6bright green, blue-green, teal
Ambercommonfossil · Mohs 2-2.5yellow, orange, brown- No imageAmber Baritecommonfossil · Mohs 2-2.5yellow, orange, brown
- No imageAmber Quartzcommonmineral · Mohs 7yellow, orange, brownish-yellow
Amethystcommongemstone · Mohs 7purple, violet, lavender
Amethyst Geodecommonmineral · Mohs 7purple, violet
Ammonitescommonfossil · Mohs 3-4brown, gray, black
Amphibolecommonmineral · Mohs 5-6black, dark green, brown
Amphibolitecommonmetamorphic · Mohs 5-6black, dark green, dark gray
Amygdaloidal Basaltcommonigneous · Mohs 5-6gray, black, green
Analcimecommonmineral · Mohs 5-5.5colorless, white, gray- No imageAnalcitecommonmineral · Mohs 5-5.5white, colorless, gray
Andalusitecommonmineral · Mohs 7.5reddish-brown, brown, pink
Andesinecommonmineral · Mohs 6-6.5white, gray, greenish
Andesitecommonigneous · Mohs 6-7gray, dark gray, brownish-gray
Andraditecommonmineral · Mohs 6.5-7.5black, brown, green
Andradite Garnetcommonmineral · Mohs 6.5-7.5brown, green, yellow
Angelitecommonmineral · Mohs 3.5blue, grayish-blue, white
Anglesitecommonmineral · Mohs 2.5-3colorless, white, yellow
Anhydritecommonmineral · Mohs 3.5colorless, white, gray
Ankeritecommonmineral · Mohs 3.5-4white, yellow, brown
Annitecommonmineral · Mohs 2.5-3black, dark brown, dark green
Anorpimentcommonmineral · Mohs 1.5-2yellow, orange
Anorthositecommonigneous · Mohs 6white, gray, bluish-gray
Anthophyllitecommonmineral · Mohs 5.5-6brown, gray, white
Antigoritecommonmineral · Mohs 2.5-3.5green, yellow-green, brown
Apache Tearscommonmineral · Mohs 5-5.5black, dark brown
Apatitecommonmineral · Mohs 5green, blue, yellow
Apophyllitecommonmineral · Mohs 4.5-5white, colorless, green
Aragonitecommonmineral · Mohs 3.5-4white, colorless, yellow
Argentitecommonmineral · Mohs 2-2.5lead-gray, black- No imageArizona Ruby Garnetcommongemstone · Mohs 7-7.5red, deep red
Arkosecommonsedimentary · Mohs 6-7pink, gray, tan
Arrowheadscommonfossil · Mohs 6.5-7white, gray, brown
Arsenopyritecommonmineral · Mohs 5.5-6silver-white, steel-gray
Asbestoscommonmineral · Mohs 2.5-3white, green, gray
Augen Gneisscommonmetamorphic · Mohs 5-7gray, pink, white
Augitecommonmineral · Mohs 5.5-6black, dark green, brownish green
Aurichalcitecommonmineral · Mohs 2pale blue, greenish-blue, sea-green
Australitecommonmineral · Mohs 5-6black, dark brown, olive green
Autunitecommonmineral · Mohs 2-2.5yellow, yellowish-green, lemon-yellow
Aventurinecommongemstone · Mohs 6.5-7green, red, brown
Azuritecommonmineral · Mohs 3.5-4azure blue, deep blue
Baculitecommonfossil · Mohs 3-4brown, gray, beige
Banded Agatecommonmineral · Mohs 6.5-7white, gray, blue
Banded Iron Formationcommonsedimentary · Mohs 5-7red, gray, black- No imageBanded Opalcommonmineral · Mohs 5.5-6.5white, gray, brown
- No imageBanded Serpentinecommonmineral · Mohs 2.5-5.5green, yellow-green, dark green
Baritecommonmineral · Mohs 3-3.5colorless, white, yellow- No imageBarite Rosescommonmineral · Mohs 3-3.5brown, reddish-brown, tan
Barytecommonmineral · Mohs 3-3.5white, colorless, yellow
Basaltcommonigneous · Mohs 6black, dark gray, dark green
Bauxitecommonsedimentary · Mohs 1-3red, brown, tan
Beidellitecommonmineral · Mohs 1-2white, yellow, gray
Belemnitecommonfossil · Mohs 3-4brown, black, gray
Bentonitecommonsedimentary · Mohs 1-2white, cream, gray
Berthierinecommonmineral · Mohs 2.5dark green, brownish green, blackish green
Berylcommonmineral · Mohs 7.5-8colorless, green, blue
Biggs Jaspercommonmineral · Mohs 6.5-7tan, brown, cream
Biotitecommonmineral · Mohs 2.5-3black, dark brown, dark green
Birnessitecommonmineral · Mohs 1.5black, brownish-black
Bismuthinitecommonmineral · Mohs 2lead-gray, tin-white
Bison Skullcommonfossil · Mohs 3-5white, brown, tan
Bivalve Fossilcommonfossil · Mohs 3-5tan, brown, gray- No imageBlack Agatecommonmineral · Mohs 6.5-7black, dark gray
- No imageBlack Chertcommonmineral · Mohs 6.5-7black, dark gray
- No imageBlack Flintcommonmineral · Mohs 7black, dark gray
- No imageBlack Jaspercommonmineral · Mohs 6.5-7black
- No imageBlack Tourmalinecommonmineral · Mohs 7-7.5black, brownish-black
Blastoidcommonfossilgray, brown, white
Blöditecommonmineral · Mohs 3colorless, white, yellowish- No imageBloeditecommonmineral · Mohs 2.5-3colorless, white, yellow
Bloodstonecommonmineral · Mohs 6.5-7green, red- No imageBlue Agatecommonmineral · Mohs 6.5-7blue, white, gray
- No imageBlue Agate Geodecommonmineral · Mohs 6.5-7blue, white, gray
Blue Amphibolecommonmineral · Mohs 5-6blue, blue-gray, lavender-blue- No imageBlue Apatitecommonmineral · Mohs 5blue, blue-green, teal
- No imageBlue Baritecommonmineral · Mohs 3-3.5blue, colorless, white
- No imageBlue Berylcommongemstone · Mohs 7.5-8blue, blue-green, light blue
Blue Calcitecommonmineral · Mohs 3blue, pale blue, grayish blue- No imageBlue Chalcedonycommonmineral · Mohs 6.5-7blue, light blue, grayish blue
- No imageBlue Chertcommonmineral · Mohs 6.5-7blue, gray-blue, light blue
- No imageBlue Jaspercommonmineral · Mohs 6.5-7blue, gray-blue, dark blue
- No imageBlue Kyanitecommonmineral · Mohs 4.5-7blue, light blue, deep blue
Blue Lace Agatecommonmineral · Mohs 6.5-7blue, white- No imageBlue Moonstonecommongemstone · Mohs 6-6.5blue, white, colorless
Blue Quartzcommonmineral · Mohs 7blue, grayish-blue, lavender-blue
Blue Sapphirecommongemstone · Mohs 9blue, violet-blue, greenish-blue
Blue Topazcommongemstone · Mohs 8blue, sky blue, swiss blue
Blueschistcommonmetamorphicblue, bluish-gray, blue-green
Bluestonecommonsedimentary · Mohs 3-7blue, gray, bluish-gray
Böhmitecommonmineral · Mohs 3-3.5white, gray, yellowish- No imageBoji Stonescommonmineral · Mohs 3.5-4brown, gray, black
Hunt the unusual
Open RockHoundR to find mapped spots and log finds wherever they show up.
