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 2401–2520 of 2721 rocks (page 21 of 23).
Tetrahedritecommonmineral · Mohs 3-4steel-gray, iron-black, black
Tetrahedrite-(Fe)commonmineral · Mohs 3-4steel-gray, iron-black
Tetrahedrite-(Zn)commonmineral · Mohs 3-4steel-gray, iron-black- No imageTetrarooseveltiteraremineral · Mohs 3-4yellow, greenish-yellow
- No imageThalcusiteraremineral · Mohs 3.5bronze-yellow, brass-yellow
Thalfenisiteraremineral · Mohs 3steel-gray, black- No imageThalhammeriteraremineral · Mohs 3.5white, pale yellow
- No imageThalliumpharmacosideriteraremineral · Mohs 2.5yellow, yellowish-green, brown
Thaumasiteuncommonmineral · Mohs 3.5white, colorless
Theisiteraremineral · Mohs 2.5green, yellow-green
Thenarditecommonmineral · Mohs 2.5-3white, colorless, grayish- Thénarditecommonmineral · Mohs 2.5-3colorless, white, gray
- No imageTheoparacelsiteraremineral · Mohs 3.5green, dark green, emerald green
Theophrastiteraremineral · Mohs 3-3.5emerald-green, grass-green
Therasiaiteraremineral · Mohs 3.5white, colorless
Thérèsemagnaniteraremineral · Mohs 2-3blue, greenish blue- No imageThermessaite-(NH4)raremineral · Mohs 2-3colorless, white
Thomasclarkite-(Y)raremineral · Mohs 3white, colorless
Thometzekiteraremineral · Mohs 3.5green, yellow-green
Thorikositeraremineral · Mohs 3yellow, yellowish-white
Tiemanniteraremineral · Mohs 2.5steel-gray, iron-black
Tiettaiteraremineral · Mohs 3-4yellow, brown
Tikhonenkoviteraremineral · Mohs 3colorless, white
Tilleyiteraremineral · Mohs 3colorless, white, grayish- No imageTillmannsiteraremineral · Mohs 3.5silver-white, light gray
Timroseiteraremineral · Mohs 3dark green, black
Tinsleyiteraremineral · Mohs 3.5-4white, colorless, pale pink
Tinticiteraremineral · Mohs 3yellow, yellow-brown, white
Tintinaiteraremineral · Mohs 3-3.5lead-gray, steel-gray
Tiptopiteraremineral · Mohs 3.5white, colorless, pink- No imageTischendorfiteraremineral · Mohs 3-4white, gray
Tobeliteraremineral · Mohs 2-3white, colorless, grayish
Tobermoriteuncommonmineral · Mohs 2.5white, pink, yellowish
Tocornaliteraremineral · Mohs 2-3yellow, pale yellow, brownish yellow
Todorokitecommonmineral · Mohs 1.5-2.5black, brownish-black
Tokyoiteraremineral · Mohs 3.5-4yellow, yellowish-green, brown
Tolovkiteraremineral · Mohs 3.5white, gray
Tondiiteraremineral · Mohs 3dark green, blackish green
Torberniteuncommonmineral · Mohs 2-2.5emerald green, grass green, leek green- No imageTörnroositeraremineral · Mohs 3-4black
- No imageTorrecillasiteraremineral · Mohs 3yellow, yellow-brown
Torreyiteraremineral · Mohs 2-3yellow, yellowish-orange
Toyohaiteraremineral · Mohs 3.5gray, black
Travertinecommonsedimentary · Mohs 3-4white, tan, cream
Treasuriteraremineral · Mohs 3.5colorless, white, gray
Trianguliteraremineral · Mohs 2.5-3yellow, yellowish-green
Triazoliteraremineral · Mohs 3colorless, white- No imageTrigodomeykiteraremineral · Mohs 3-3.5silver-white, tin-white, pale yellow
Trigoniteraremineral · Mohs 2.5-3yellow, yellowish-brown
Trilithioniteraremineral · Mohs 2.5-3pink, violet, purple
Trilobite Fossilscommonfossil · Mohs 3-5black, brown, gray- No imageTrippkeiteraremineral · Mohs 3-4blue, blue-green, green
Tristramiteraremineral · Mohs 3.5-4white, yellowish, brown
Trögeriteraremineral · Mohs 2-3red, orange, yellow
Troiliteuncommonmineral · Mohs 3.5-4bronze, brownish-bronze, yellowish-brown
Tronacommonmineral · Mohs 2.5-3white, gray, yellow
Truscottiteraremineral · Mohs 2.5-3white, pale yellow, brownish
Tschörtneriteraremineral · Mohs 3.5-4colorless, white, pale yellow- No imageTsnigriiteraremineral · Mohs 3-3.5dark gray, black
Tsumebiteraremineral · Mohs 3-3.5green, emerald-green, yellow-green
Tsygankoiteraremineral · Mohs 3-3.5steel-gray, black
Tubulitecommonfossil · Mohs 3-4gray, brown, white
Tučekiteraremineral · Mohs 3.5white, gray
Tufacommonsedimentary · Mohs 3white, gray, yellow
Tuffcommonigneous · Mohs 2-4white, gray, tan
Tuliokiteraremineral · Mohs 3.5colorless, white, yellowish- No imageTululiteraremineral · Mohs 3.5yellow, brownish-yellow
Tundrite-(Ce)raremineral · Mohs 3-4yellow, brownish yellow, greenish yellow
Tunelliteraremineral · Mohs 3.5colorless, white
Tungstiteuncommonmineral · Mohs 2.5yellow, yellowish-green, orange-yellow
Tungusiteraremineral · Mohs 2-3greenish-white, pale green, white
Tunisiteraremineral · Mohs 3white, colorless
Turaniteraremineral · Mohs 3-4dark olive-green, pistachio-green, blackish-green- No imageTuzlaiteraremineral · Mohs 3.5colorless, white
Tvalchrelidzeiteraremineral · Mohs 3-3.5dark gray, black
Tvedaliteraremineral · Mohs 3-4white, yellowish-white, pale yellow
Tveitite-(Y)raremineral · Mohs 3.5white, colorless, yellowish-white- No imageTwinniteraremineral · Mohs 3.5lead-gray, black
Tyretskiteraremineral · Mohs 3.5white, colorless, gray
Tyrrelliteraremineral · Mohs 3.5-4gray, steel gray
Uchucchacuaiteraremineral · Mohs 3.5gray, lead-gray- No imageUdumineliteraremineral · Mohs 3-4yellow, yellowish-brown
Uintaitecommonmineral · Mohs 2-2.5black- No imageUklonskoviteraremineral · Mohs 2.5white, colorless
Ulexitecommonmineral · Mohs 2.5white, colorless
Ulrichiteraremineral · Mohs 3emerald green, apple green
Umangiteraremineral · Mohs 2.5-3dark blue, violet-blue, reddish-violet- No imageUmbrianiteraremineral · Mohs 3.5colorless, white, yellow
Umohoiteraremineral · Mohs 2-3black, dark blue, bluish-black- No imageUngavaiteraremineral · Mohs 3-3.5gray, white
- No imageUngemachiteraremineral · Mohs 2.5colorless, yellow, white
- No imageUpaliteraremineral · Mohs 2-3yellow, green
Uraloliteraremineral · Mohs 3-4white, colorless, pale yellow- No imageUramarsiteraremineral · Mohs 2-3yellow, yellow-green
- No imageUramphiteraremineral · Mohs 2-3emerald green
- No imageUrancalcariteraremineral · Mohs 2.5yellow, greenish-yellow
Uranocirciteuncommonmineral · Mohs 2-2.5yellow, greenish-yellow
Uranophanecommonmineral · Mohs 2.5yellow, lemon-yellow, orange-yellow
Uranopiliteuncommonmineral · Mohs 2.5yellow, bright yellow, greenish-yellow- No imageUranosiliteraremineral · Mohs 3yellow, pale yellow
Uranospathiteraremineral · Mohs 2.5yellow, yellow-green- No imageUranosphaeriteraremineral · Mohs 2-3orange, orange-yellow, yellow
Uranospiniteraremineral · Mohs 2-3yellow, yellow-green, light green
Uranotungstiteraremineral · Mohs 2-3yellow, yellowish-orange- No imageUroxiteraremineral · Mohs 2-3yellow, yellowish-green
Urusoviteraremineral · Mohs 3white, colorless
Urvantseviteraremineral · Mohs 2.5-3white, gray
Ushkoviteraremineral · Mohs 3yellow, yellowish-brown
Ustarasiteraremineral · Mohs 2.5-3lead-gray, steel-gray
Utahiteraremineral · Mohs 2.5yellow, golden yellow
Uytenbogaardtiteraremineral · Mohs 2.5white, pale yellow
Valentiniteuncommonmineral · Mohs 2.5-3white, colorless, gray- No imageVanackeriteraremineral · Mohs 3.5-4yellow, brownish-yellow, orange
Vanadiniteuncommonmineral · Mohs 3red, orange, brown
Vandenbrandeiteraremineral · Mohs 3green, dark green, emerald green
Vandendriesscheiteraremineral · Mohs 3orange, yellow, orange-yellow- No imageVanderheydeniteraremineral · Mohs 3white, colorless, gray
- No imageVaniniiteraremineral · Mohs 3yellow, orange, brownish-yellow
Vanmeersscheiteraremineral · Mohs 3yellow, yellowish-green
Vanoxiteraremineral · Mohs 2-3black
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