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 361–480 of 780 common entries (page 4 of 7).
Halotrichitecommonmineral · Mohs 2colorless, white, yellow
Hawk's Eyecommonmineral · Mohs 7blue, blue-gray, blue-green
Hedenbergitecommonmineral · Mohs 5.5-6dark green, black, brownish-green- No imageHeliotrope Bauxitecommonmineral · Mohs 6.5-7dark green, red
Hematitecommonmineral · Mohs 5.5-6.5steel-gray, black, reddish-brown
Hemimorphitecommonmineral · Mohs 4.5-5colorless, white, blue
Herkimer Diamondcommonmineral · Mohs 7colorless, smoky
Heulanditecommonmineral · Mohs 3.5-4white, colorless, yellow
Heulandite-Cacommonmineral · Mohs 3.5-4white, colorless, pink- No imageHeulandite-Nacommonmineral · Mohs 3-4white, colorless, yellow
Hexahydritecommonmineral · Mohs 2white, colorless, pale yellow
Honey Calcitecommonmineral · Mohs 3yellow, honey-yellow, amber
Horn Coralcommonfossil · Mohs 3-4gray, tan, brown
Hornblendecommonmineral · Mohs 5-6black, dark green, brownish-green
Hornfelscommonmetamorphic · Mohs 5-7gray, dark gray, black
Horsetail Fossilcommonfossil · Mohs 3-5gray, brown, black
Howlitecommonmineral · Mohs 3.5white, gray, colorless
Huntitecommonmineral · Mohs 1-2white, off-white
Hyalitecommonmineral · Mohs 5.5-6.5colorless, white, yellowish- No imageHydrobiotitecommonmineral · Mohs 1-2brown, yellowish-brown, greenish-brown
Hydromagnesitecommonmineral · Mohs 3.5white, colorless, grayish
Hydrotalcitecommonmineral · Mohs 2white, gray, pale green
Hydroxyapophyllite-(K)commonmineral · Mohs 4.5-5white, colorless, green
Hydroxylapatitecommonmineral · Mohs 5colorless, white, green
Hydrozincitecommonmineral · Mohs 2-2.5white, grayish-white, yellowish-white
Hypersthenecommonmineral · Mohs 5-6black, dark brown, dark green
Icecommonmineral · Mohs 1.5colorless, white, blue
Idocrasecommonmineral · Mohs 6.5green, brown, yellow
Ignimbritecommonigneous · Mohs 5-7gray, white, pink
Illitecommonmineral · Mohs 1-2white, gray, pale green
Ilmenitecommonmineral · Mohs 5-6black, iron-black, brownish-black- No imageImperial Jaspercommonmineral · Mohs 6.5-7red, green, yellow
- No imageIndigo Gabbrocommonigneous · Mohs 6-7black, dark purple, gray
Indochinitecommonmineral · Mohs 5.5-6.5black, brown
Insect in Ambercommonfossil · Mohs 2-2.5yellow, orange, brown
Iron Orecommonmineral · Mohs 5-6.5red, black, brown
Jadecommonmineral · Mohs 6-7green, white, lavender
Jarositecommonmineral · Mohs 2.5-3.5yellow, yellowish-brown, brown- No imageJasp-Agatecommonmineral · Mohs 6.5-7red, yellow, brown
Jaspercommonmineral · Mohs 6.5-7red, yellow, brown- No imageJasperized Dinosaur Bonecommonfossil · Mohs 6.5-7red, brown, yellow
Jaspilitecommonsedimentary · Mohs 6-7red, gray, silver
Jetcommonfossil · Mohs 2.5-4black, dark brown
Kainitecommonmineral · Mohs 2.5-3colorless, white, yellow- No imageKambaba Jaspercommonfossil · Mohs 6.5-7green, black
Kaolincommonmineral · Mohs 2-2.5white, grayish, yellowish
Kaolinitecommonmineral · Mohs 2-2.5white, grayish, yellowish
Keokuk Geodecommonmineral · Mohs 7clear, white, gray
Keweenaw Agatecommonmineral · Mohs 6.5-7red, orange, white
Kieseritecommonmineral · Mohs 3.5white, colorless, yellowish
Kingman Turquoisecommonmineral · Mohs 5-6blue, green, blue-green
Knightiacommonfossiltan, brown, gray
Kyanitecommonmineral · Mohs 4.5-7blue, colorless, white- No imageKyanite Bladescommonmineral · Mohs 4.5-7blue, white, gray
- No imageLaachitecommonmineral · Mohs 7colorless, white, milky
Labradoritecommonmineral · Mohs 6-6.5gray, gray-green, blue- No imageLake County Diamondcommonmineral · Mohs 7colorless
Lake Superior Agatecommonmineral · Mohs 6.5-7red, orange, yellow- No imageLapearlitecommonmineral · Mohs 3.5-4white, cream, yellowish
Lapis Lazulicommonmineral · Mohs 5-5.5blue, deep blue, ultramarine
Larvikitecommonigneous · Mohs 6gray, blue, black- No imageLas Choyas Coconut Geodecommonmineral · Mohs 7white, clear, purple
Laumontitecommonmineral · Mohs 4white, colorless, yellow- No imageLavic Jaspercommonmineral · Mohs 6.5-7red, brown, tan
- No imageLeopard Skin Jaspercommonmineral · Mohs 6.5-7brown, tan, black
Leoparditecommonmineral · Mohs 6-7white, cream, brown
Lepidocrocitecommonmineral · Mohs 5red, reddish-brown, orange-red
Lepidolitecommonmineral · Mohs 2.5-3lilac, pink, violet
Leucitecommonmineral · Mohs 5.5-6white, gray, colorless
Levantitecommonmineral · Mohs 6.5-7white, gray, brown- No imageLimb Castcommonfossil · Mohs 7clear, white, gray
Limecommonsedimentary · Mohs 3-4white, gray, yellow
Limestonecommonsedimentary · Mohs 3white, gray, tan
Limonitecommonmineral · Mohs 4-5.5yellow, brown, reddish-brown- No imageLimonite Cubescommonmineral · Mohs 4-5.5brown, yellow-brown, black
Lithiophoritecommonmineral · Mohs 3black, bluish black- No imageLithium Quartzcommonmineral · Mohs 7pink, lavender, white
Lizarditecommonmineral · Mohs 2.5-3green, yellow-green, white
Lodestonecommonmineral · Mohs 5.5-6.5black, iron-black
London Blue Topazcommongemstone · Mohs 8dark blue, blue- No imageMagnesio-ferri-hornblendecommonmineral · Mohs 5-6dark green, brown, black
Magnesio-hornblendecommonmineral · Mohs 5-6dark green, brownish-green, black
Magnesitecommonmineral · Mohs 3.5-4.5white, gray, yellow- No imageMagnesium Carbonatescommonmineral · Mohs 3.5-4.5white, colorless, gray
Magnetitecommonmineral · Mohs 5.5-6.5black, iron-black
Mahogany Obsidiancommonmineral · Mohs 5-6red-brown, black
Malachitecommonmineral · Mohs 3.5-4bright green, dark green, emerald green
Mammoth Toothcommonfossil · Mohs 2.5-3tan, brown, cream- No imageManaccanitecommonmineral · Mohs 5-6black, iron-black
Manatee Bonescommonfossil · Mohs 3-5tan, brown, gray
Manganitecommonmineral · Mohs 4dark gray, black, steel-gray
Mangano Calcitecommonmineral · Mohs 3pink, pale pink, peach
Marblecommonmetamorphic · Mohs 3-4white, gray, black
Marcasitecommonmineral · Mohs 6-6.5pale brass-yellow, tin-white, gray- No imageMarmolitecommonmineral · Mohs 2.5-3green, pale green, white
Martitecommonmineral · Mohs 5.5-6.5black, dark gray
Mary Ellen Jaspercommonfossil · Mohs 6.5-7red, brown, black- No imageMatrix Opalcommongemstone · Mohs 5.5-6.5multicolored, brown, black
- No imageMeerschautitecommonmineral · Mohs 2white, gray, yellowish
- No imageMegalodon Teethcommonfossil · Mohs 3-5gray, black, brown
Megalodon Toothcommonfossil · Mohs 3-5black, gray, brown- No imageMelaconitecommonmineral · Mohs 3black, gray
Melanteritecommonmineral · Mohs 2green, yellowish-green, white
Meta-autunitecommonmineral · Mohs 2-2.5yellow, yellow-green, light green
Mexican Lace Agatecommonmineral · Mohs 6.5-7white, red, orange
Mexican Onyxcommonmineral · Mohs 3white, yellow, brown
Micacommonmineral · Mohs 2-3black, brown, silver- No imageMica Bookscommonmineral · Mohs 2.5-4black, brown, silver
Mica Schistcommonmetamorphic · Mohs 3-6silver, gray, black
Microclinecommonmineral · Mohs 6white, gray, yellow
Migmatitecommonmetamorphic · Mohs 5-7black, white, gray
Milky Quartzcommonmineral · Mohs 7white, milky white
Mirabilitecommonmineral · Mohs 1.5-2white, colorless, yellowish- No imageMojaveitecommonmineral · Mohs 6.5-7red, brown, tan
Molybdenitecommonmineral · Mohs 1-1.5lead-gray, bluish-gray
Molybdenumcommonmineral · Mohs 1-1.5silver-gray
Monazitecommonmineral · Mohs 5-5.5reddish-brown, yellowish-brown, brown
Monazite-(Ce)commonmineral · Mohs 5-5.5reddish-brown, brown, yellowish-brown- No imageMontana Agatecommonmineral · Mohs 6.5-7yellow, orange, brown
Montana Moss Agatecommonmineral · Mohs 6.5-7clear, white, gray
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