1 | Hauerite | 4.0 | Reddish-brown/black | Opaque | Isometric | 0.08 | |
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2 | Genthelvite | 6.0 - 6.5 | Colourless, white, yellow, green, pink to red, darkens to brown and black on weathering | Transparent, Translucent | Isometric | 0.067 | |
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3 | Microcline | 6.0 - 6.5 | White, grey, greyish yellow, yellowish, tan, salmon-pink, bluish green, green. | Transparent, Translucent | Triclinic | 0.03 | |
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4 | Faustite | 5.5 | Apple-green | Translucent, Opaque | Triclinic | 0.024 | |
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5 | Narsarsukite | 7.0 | Yellow, yellowish-white, grayish-white, honey-yellow, tan, greenish-yellow | Transparent, Translucent | Tetragonal | 0.022 | |
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6 | Mellite | 2.0 - 2.5 | Honey to wax yellow, brown to reddish, gray, seldom white, colourless to pale yellow in transmitted light. | Transparent, Translucent | Tetragonal | 0.021 | |
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7 | Poughite | 5.0 | Yellow, brownish yellow, greenish yellow | | Orthorhombic | 0.019 | |
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8 | Umangite | 3.0 | Red, bluish red-black, iridescent violet-blue (tarnished) | Opaque | Tetragonal | 0.015 | |
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9 | Thorite | 4.5 | Yellow, yellow-brown, red-brown, green, orange to black | Opaque | Tetragonal | 0.015 | |
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10 | Orthoclase | 6.0 | Colorless to white, Greenish white, Grayish yellow, Pale pink | Transparent, Translucent | Monoclinic | 0.015 | |
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11 | Terskite | 5.0 | White, pale lilac to violet | | Orthorhombic | 0.014 | |
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12 | Chrysoberyl | 8.5 | Green shades, emerald-green, greenish white, yellowish green, greenish brown, yellow, blue | Transparent, Translucent | Orthorhombic | 0.014 | |
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13 | Boracite | 7.0 - 7.5 | Green, blue, colourless, grey, white, dark green (ferroan), colourless in transmitted light | Transparent, Translucent | Orthorhombic | 0.014 | |
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14 | Lazulite | 5.5 - 6.0 | Blue, sky-blue, bluish white | Transparent, Translucent | Monoclinic | 0.011 | |
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15 | Mallestigite | 4.0 | Colourless, yellow | Transparent, Translucent | Hexagonal | 0.01 | |
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16 | Curite | 4.0 - 5.0 | Deep to light red-orange, orange, scarlet, yellow | Transparent, Translucent | Orthorhombic | 0.01 | |
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17 | Carpathite | 1.5 | Yellow, yellowish brown | Translucent | Monoclinic | 0.009 | |
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18 | Andalusite | 6.5 - 7.5 | Pink to red brown, occasionally yellow, green, white, gray rarely violet | Transparent, Translucent | Orthorhombic | 0.009 | |
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19 | Antigorite | 3.5 - 4.0 | green, green-blue, white, brown, black | Transparent | Monoclinic | 0.009 | |
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20 | Titanite | 5.0 - 5.5 | Colourless, brown, green, yellow, rose-red or black. | Transparent, Translucent | Monoclinic | 0.009 | |
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21 | Dussertite | 3.5 | Green, yellow-green, bluish green, yellowish green in transmitted light. | Translucent | Trigonal | 0.008 | |
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22 | Glauberite | 2.5 - 3.0 | Grey, yellowish, colourless, colourless in transmitted light | Transparent, Translucent | Monoclinic | 0.008 | |
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23 | Carnotite | 2.0 | Bright yellow, yellow, greenish yellow | Translucent | Monoclinic | 0.008 | |
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24 | Goudeyite | 3.0 - 4.0 | blue-green, yellow-green | | Hexagonal | 0.008 | |
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25 | Mcguinnessite | 2.5 | light blue-green, Cu-rich cores slightly darker blue, Mg-rich rims very pale blue-green to nearly white | Translucent | | 0.008 | |
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26 | Ajoite | 2.0 - 2.5 | Bluish green | Translucent | Triclinic | 0.008 | |
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27 | Zemannite | 2.0 | Brown | | Hexagonal | 0.008 | |
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28 | Alunite | 3.5 - 4.0 | white, pale shades of gray, yellow, red, to reddish brown | Transparent, Translucent | Trigonal | 0.007 | |
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29 | Helvine | 6.0 - 6.5 | Golden yellow, brown, red, gray-yellow, yellow-green | Translucent | Isometric | 0.007 | |
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30 | Cubanite | 3.5 | Brass- to bronze-yellow | Opaque | Orthorhombic | 0.007 | |
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31 | Claraite | 2.5 - 3.0 | Turquoise blue | Translucent | Triclinic | 0.007 | |
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32 | Zunyite | 7.0 | Colourless, grey, white, flesh-red | Transparent, Translucent | Isometric | 0.007 | |
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33 | Posnjakite | 2.0 - 3.0 | Sky-blue to dark-blue, may be slightly greenish-blue. | | Monoclinic | 0.007 | |
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34 | Tremolite | 5.0 - 6.0 | White, brown, colourless, grey, light green, green, light yellow, pink-violet | Transparent, Translucent | Monoclinic | 0.007 | |
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35 | Woodwardite | 4.5 | Greenish-blue, turquoise-blue | Translucent, Opaque | Trigonal | 0.006 | |
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36 | Purpurite | 4.0 - 4.5 | Dark purple to purplish red. | Opaque | Orthorhombic | 0.006 | |
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37 | Botallackite | 1.0 | Mountain-green, bluish green to green, pale bluish green in transmitted light | Transparent, Translucent | Monoclinic | 0.006 | |
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38 | Nakauriite | 5.0 - 5.5 | Translucent blue | | Orthorhombic | 0.006 | |
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39 | Marshallsussmanite | 3.0 | Light pink to deep pink, orange-pink | | | 0.006 | |
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40 | Whewellite | 2.5 - 3.0 | White, yellow, brown, colourless, colourless in transmitted light. | Transparent, Translucent | Monoclinic | 0.005 | |
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41 | Spodumene | 6.5 - 7.0 | Colourless, yellow, light green, emerald-green, pink to violet, purple, white, gray | Transparent, Translucent | Monoclinic | 0.005 | |
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42 | Medaite | 2.5 | Brownish-red | Translucent | Monoclinic | 0.005 | |
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43 | Variscite | 3.5 - 4.5 | Pale to emerald-green, bluish green, colourless to white, pale shades of brown or yellow, rarely red, Colourless to pale green in transmitted light. | Transparent, Translucent | Orthorhombic | 0.005 | |
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44 | Fluornatromicrolite | 5.0 | Green | Transparent | Isometric | 0.005 | |
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45 | Beryl | 7.5 - 8.0 | Colorless, green, blue, yellow, white, pink, etc. | | Hexagonal | 0.005 | |
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46 | Lizardite | 2.0 | | | | 0.005 | |
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47 | Fayalite | 7.0 | Greenish-yellow, yellow or brown | Transparent, Translucent | Orthorhombic | 0.005 | |
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48 | Gahnite | 7.5 - 8.0 | Dark blue-green, yellow, brown, black | | Isometric | 0.005 | |
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49 | Senarmontite | 2.0 - 2.5 | Colourless to gray | Transparent, Translucent | Isometric | 0.005 | |
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50 | Forsterite | 7.0 | Green, pale yellow or white. | Transparent, Translucent | Orthorhombic | 0.005 | |
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51 | Glaucocerinite | 1.0 | Sky-blue, turquoise-blue, greenish, greyish, brownish | | Hexagonal | 0.004 | |
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52 | Stichtite | 1.5 - 2.0 | Rose-pink to purple | Transparent | Trigonal | 0.004 | |
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53 | Scheelite | 4.5 - 5.0 | Tan, golden-yellow, colourless, white, greenish, dark brown, etc., colourless in transmitted light | Transparent, Opaque | Tetragonal | 0.004 | |
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54 | Pyroaurite | 2.5 | Yellow to brownish-white, white, gray, silver-white, greenish or colourless | Transparent | Trigonal | 0.004 | |
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55 | Wurtzite | 3.5 - 4.0 | Dark reddish-brown to black, orange-brown | Translucent | Hexagonal | 0.004 | |
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56 | Opal | 5.5 - 6.5 | Colourless, white, yellow, red, orange, green, brown, black, blue | Transparent, Translucent | | 0.004 | |
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57 | Nenadkevichite | 5.0 | Rose-pink, very light pink, light yellow, brown, dark brown due to inclusions | Transparent, Translucent, Opaque | Orthorhombic | 0.004 | |
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58 | Turquoise | 5.0 - 6.0 | bright blue, sky-blue, pale green, blue-green, turquoise-blue, apple-green, green-gray | Transparent, Translucent, Opaque | Triclinic | 0.004 | |
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59 | Talc | 1.0 | Colorless, white, pale green, bright emerald-green to dark green, brown, gray | Transparent, Translucent | Triclinic | 0.004 | |
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60 | Hydroxylapatite | 5.0 | White, grey, yellow, green, violet, purple, red or brown | Transparent, Translucent, Opaque | Hexagonal | 0.004 | |
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61 | Sylvite | 1.5 - 2.0 | Colourless, grey, white, yellowish to reddish, seldom blue or violet | Transparent, Translucent | Isometric | 0.004 | |
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62 | Bementite | 6.0 | Brown, dark brown, golden brown, grayish-yellow | Translucent | Monoclinic | 0.004 | |
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63 | Scheuchzerite | 2.5 | Yellow-orange | | | 0.004 | |
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64 | Edenite | 5.0 - 6.0 | White, grey, pale to dark green, also brown and pale pinkish-brown | | Monoclinic | 0.004 | |
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65 | Chenevixite | 3.5 - 4.5 | Olive green, yellow-green, dark green. | Transparent, Translucent | Monoclinic | 0.004 | |
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66 | Chalcopyrite | 3.5 - 4.0 | Brass yellow, often with an iridescent tarnish. | Opaque | Tetragonal | 0.003 | |
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67 | Spinel | 7.5 - 8.0 | Black, blue, red, violet, green, brown, pink | Transparent, Translucent | Isometric | 0.003 | |
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68 | Libethenite | 4.0 | Light to dark green, blackish green, olive-green, bluish green to light green in transmitted light. | Transparent, Translucent | Orthorhombic | 0.003 | |
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69 | Trona | 2.5 | Colourless, gray-white, light yellow, colourless in transmitted light. | Translucent | Monoclinic | 0.003 | |
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70 | Sellaite | 5.0 - 5.5 | Colourless, white, colourless in transmitted light. | Transparent | Tetragonal | 0.003 | |
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71 | Kaolinite | 2.0 - 2.5 | White to cream and pale-yellow, also often stained various hues, tans and browns being common. | Translucent, Opaque | Triclinic | 0.003 | |
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72 | Tangeite | 3.5 | yellow, yellow-green, olive green, green to dark green, light green in transmitted light. | Transparent, Translucent | Orthorhombic | 0.003 | |
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73 | Magnetite | 5.5 - 6.5 | Greyish black or iron black | Opaque | Isometric | 0.003 | |
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74 | Brannerite | 4.5 - 5.5 | Black, brownish olive-green, yellow-brown to yellow with alteration, yellowish green in transmitted light | Opaque | Monoclinic | 0.003 | |
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75 | Arsenolite | 1.5 | White, bluish, reddish to yellowish if impure with realgar or orpiment, colourless in transmitted light | Transparent | Isometric | 0.003 | |
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76 | Copper | 2.5 - 3.0 | Copper-red. Tarnishes to black or green in air. | Opaque | Isometric | 0.003 | |
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77 | Emplectite | 2.0 | Greyish to tin-white | Opaque | Orthorhombic | 0.003 | |
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78 | Wittichenite | 2.0 - 3.0 | Lead grey, bronze, tin-white, steel grey, yellow | Opaque | Orthorhombic | 0.003 | |
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79 | Gearksutite | 2.0 | white, colourless (including in transmitted light) | | Triclinic | 0.003 | |
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80 | Pyrite | 6.0 - 6.5 | Pale brass-yellow | Opaque | Isometric | 0.003 | |
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81 | Montgomeryite | 4.0 | Dark green to light green, colourless, red, yellow | Transparent, Translucent | Monoclinic | 0.003 | |
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82 | Svanbergite | 5.0 | colourless, yellow, reddish brown to rose-pink, colourless in transmitted light | Translucent | Trigonal | 0.003 | |
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83 | Iron | 4.5 | Iron-black | Opaque | Isometric | 0.003 | |
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84 | Perroudite | 2.0 | Bright red | Transparent | Orthorhombic | 0.003 | |
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85 | Melanterite | 2.0 | Colorless to white or green, also greenish-blue to blue with increased Cu content, colourless to pale green in transmitted light. | Translucent, Opaque | Monoclinic | 0.003 | |
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86 | Sillimanite | 6.5 - 7.5 | Colorless, white, yellow, brown, green, gray. | Transparent, Translucent | Orthorhombic | 0.003 | |
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87 | Heterosite | 4.0 - 4.5 | Untreated mineral is usually Purple Black, also Deep rose to reddish purple, especially when treated in a strong acid solution. | Opaque | Orthorhombic | 0.003 | |
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88 | Hardystonite | 3.0 - 4.0 | light brownish white, pale greyish-white, whitish, very pale pinkish | Opaque | Tetragonal | 0.002 | |
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89 | Montebrasite | 5.5 - 6.0 | White, colorless, gray white, very pale brown, pale pink, pale yellow | Transparent, Translucent | Triclinic | 0.002 | |
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90 | Lenoblite | 3.0 | | | Orthorhombic | 0.002 | |
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91 | Florencite-(Ce) | 5.0 - 6.0 | | | | 0.002 | |
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92 | Bornite | 3.0 | Copper-red to pinchbeck-brown, quickly tarnishing to an iridescent purplish surface. | Opaque | Orthorhombic | 0.002 | |
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93 | Tilasite | 5.0 | Light gray, violet-gray, pinkish red (LÄngban), olive-green, apple-green (India), colourless or pale green in transmitted light. | Translucent | Monoclinic | 0.002 | |
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94 | Sanidine | 6.0 | Colourless, white, grey, yellowish white, or reddish white | Transparent, Translucent | Monoclinic | 0.002 | |
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95 | Augelite | 4.5 - 5.0 | White, colourless, pale yellow, light green, rarely blue or pink, colourless in transmitted light. | Transparent | Monoclinic | 0.002 | |
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96 | Fluorite | 4.0 | Purple, lilac, golden-yellow, green, colourless, blue, pink, champagne, brown. | Transparent | Isometric | 0.002 | |
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97 | Anatase | 5.5 - 6.0 | Brown, pale yellow or reddish brown, indigo, black, pale green, pale lilac, grey, rarely nearly colourless, brown, yellow-brown, pale green, blue in transmitted light. | Transparent, Translucent | Tetragonal | 0.002 | |
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98 | Hydroxylherderite | 5.0 - 5.5 | Colorless, gray, brown, pale yellow, greenish white, light blue, purple, colourless in transmitted light. | Transparent, Translucent | Monoclinic | 0.002 | |
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99 | Parisite-(Ce) | 4.5 | Brown, brownish-yellow, waxy yellow, gray-yellow, colourless to yellow in transmitted light. | Transparent, Translucent | Monoclinic | 0.002 | |
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100 | Yofortierite | 2.5 | Pink to pale violet, brown | | Monoclinic | 0.002 | |
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