Opaque Minerals sorted by Mineral Name |
( Bold - Valid Mineral Name)
(* - Mineral Name is Not IMA Approved)
(! - New Dana Classification Number Has Been Changed or Added)
(? - IMA Discredited Mineral Species Name)
(# - Grandfathered as valid)
Pages: [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ 8 ] Reflectivity Help
Mineral Name | Reflected Light Color | Bireflectance | Anisotropism | Pleochroism | Diaphaneity | Reflectivity Record Count |
Orcelite | orange white | noticeable | low, weaker than nickeline | Opaque | 32 | |
Oregonite | white | weak | Opaque | 32 | ||
Orickite | strong, from grayish brown to grayish blue | weak, pale yellow to slightly deeper yellow | Opaque | 8 | ||
Orpiment # | bearly observable because of the strong internal reflections | strong, white to gray-white with a reddish tint | Transparent to translucent | 32 | ||
Osarsite | gray | weak but distinct in air | Opaque | |||
Osmium # | white, bluish gray tint | weak to moderate | Opaque | 32 | ||
Ottemannite | gray with orange-brown internal reflections | strong | weak | Opaque | ||
Ourayite | galena white | distinct to strong, light gray to bluish black | weak in oil | Opaque | ||
Ovamboite ! | pale yellowish pink with no internal reflections | none | none | none | Opaque | 8 |
Owensite | pale brownish gray | not obvious | not obvious | not obvious | Opaque | 8 |
Owyheeite # | gray-white | strong, yellowish white to gray | distinct | Opaque | 32 | |
Paakkonenite | light pale gray with bright red internam reflections | strong | weak | Opaque | 28 | |
Paarite ! | tin white with no internal reflections | distinct | Opaque | 8 | ||
Paderaite | creamy white | moderate | Opaque | |||
Paganoite ! | gray | none | none | Transparent to Translucent | 80 | |
Palarstanide | grayish white with a slight rose tint | slight, dark gray to brownish gray | distinct in oil | Opaque | 30 | |
Palladoarsenide | grayish white with a slight rose tint | moderate, dark gray wiht bluish tint to red-brown in air, dark gray to brownish gray in oil | Opaque | 32 | ||
Palladobismutharsenide | creamy | weak to distinct, in air from gray to extinction; under oil varying from gray to brownish gray | Opaque | 8 | ||
Palladodymite ! | brownish gray with bluish tint | distinct, from bluish gray to reddish brown | Opaque | 8 | ||
Palladseite | white in air, light gray in oil | Opaque | 32 | |||
Paolovite | lilac rose | dark lilac rose to pale rose | Opaque | 30 | ||
Paracostibite | white with a faint grayish tinge | weak, faint pink to pale buff | weak | Opaque | 32 | |
Paradocrasite | bright white | strong, in vivid pinks, pale orange, yellow, pale greenish blue and pale green. | distinct, from yellowish white to slightly gray white in air, pale pink-white-gray in oil | Opaque | ||
Paraguanajuatite # | distinct | distinct in air | Opaque | 32 | ||
Parapierrotite | white with a creamy tint with rare purple-red internal reflections | distinct, brownish gray to bluish gray | weak in air , grayish white to brownish gray in oil | Opaque | 32 | |
Pararammelsbergite # | strong, in russet-brown, brown, yellow, gray | Opaque | 32 | |||
Pararsenolamprite ! | white with a slight greenish blue tint | from creamy to brown, gray, green | strong | dark brown and greenish gray | Opaque | 16 |
Paraschachnerite | creamy white | distinct | brownish rose-white to creamy white | Opaque | ||
Parkerite # | light cream | strong, greenish gray to yellowish brown | perceptible | Opaque | 32 | |
Parkinsonite | gray with deep red to red-orange internal reflections | moderate | weak to moderate | Translucent | 32 | |
Pasavaite ! | pale pink with a brown tint | strong | distinct to strong with no internal reflections | brownish pink to light pink | Opaque | 38 |
Patronite # | dark gray | strong | Opaque | 32 | ||
Pautovite ! | grayish white to gray | strong | yes with no internal reflections | grayish-white to grey with slight pink tint | Opaque | 8 |
Pavonite # | white | strong, in pale to intense blue and light tan to brown. | strong, gray-pink-white and blue-gray-white in oil | Opaque | 32 | |
Paxite | light grayish white | very strong, in light gray-green and dark brown with violet tint | Opaque | 32 | ||
Pearceite # | white, with very dark red internal reflections | moderate, often dark violet | very weak in air, fair in oil | Opaque to subtranslucent | 32 | |
Pekoite | white to cream | Opaque | ||||
Penroseite # | creamy grayish white | Opaque | 32 | |||
Pentlandite # | none | Opaque | 32 | |||
Penzhinite | grayish white | evident, in colors of creamy yellow and greenish gray | Opaque | |||
Permingeatite | light brownish pink | strong, with bright colors in rose and green | Opaque | 32 | ||
Perovskite # | dark bluish gray | Transparent to translucent to opaque | 32 | |||
Peterbaylissite | gray with slight bluish tinge | weak to moderate | weak, dark gray to brown | Opaque | 32 | |
Petewilliamsite ! | dark gray with orange internal reflections | none | not obvious | none | Translucent | 40 |
Petrovicite | cream | weak, in dark green and violet | Opaque | 32 | ||
Petzite # | grayish white with a bale bluish tint | noticeable in part | Opaque | 32 | ||
Picotpaulite | creamy white | strong, in gray-violet tints | strong | Opaque | 32 | |
Pierrotite | white, with red internal reflections, dark red in transmitted light | moderate | Opaque | 32 | ||
Pillaite ! | rare red internal reflections | weak | weak | none | Opaque | 124 |
Pilsenite # | noticeable | Opaque | ||||
Pirquitasite | brownish gray, with red internal reflections | strong, from brick red to light green | Opaque | 30 | ||
Pizgrischite ! | dark brown in oil | not apparent | weak in dark brown | not apparent | Opaque | 80 |
Plagionite # | white, pale | distinct in oil | noticeable | Opaque | 32 | |
Platarsite | gray | Opaque | 30 | |||
Platinum # | white | Opaque | 32 | |||
Plattnerite # | gray-white, with red-brown internal reflections | noticeable, midnight blue | distinct | Subtranslucent to opaque | 32 | |
Platynite ? | strong | Opaque | ||||
Playfairite | strong, white to brownish gray | Opaque | ||||
Plumboferrite # | light gray | weak | Opaque | 32 | ||
Plumbopalladinite | bright white with a faint rose tint | strong, orange-brown to dark brown | noticeable in air | Opaque | 28 | |
Polarite | white with yellowish tint | slight gray to pale brown in oil | Opaque | 28 | ||
Polhemusite | gray, with intense red internal reflections | moderate in air, strong in oil | very slightly brownish gray to slightly lavender-gray | |||
Polkanovite ! | white with cream-red tint | distinct | Opaque | 8 | ||
Polyakovite-(Ce) ! | gray | none | Opaque to translucent | 8 | ||
Potarite # | cream to creamish white | noted on inclusions, brown with an orange tinge. | Opaque | 28 | ||
Potosiite | white | moderate, bluish gray to grayish pale yellow | faint, from bluish gray to yellowish gray | Opaque | 8 | |
Poubaite | creamy white | strong in light grayish | maximum parallel to elongation, creamy | Opaque | 30 | |
Poyarkovite | white | strong, azure to blue | Opaque to translucent | 22 | ||
Proudite | creamy white | straong cream-gray to tan | strong cream-white to white | Opaque | ||
Putoranite | light yellow | nickelian variety distinctly anisotropic | Opaque | 26 | ||
Putzite ! | pale rose-brownish; no internal reflections | none | none | none | Opaque | 80 |
Pyrargyrite # | strong, in yellow-white and gray-blue | Opaque to translucent | 32 | |||
Pyrite # | creamy white | Opaque | 32 | |||
Pyrobelonite # | gray with red and orange internal reflections | observable | strong | Transparent | 32 | |
Pyrolusite # | white with creamy yellow tint | weak, yellow to yellow-gray | strong in yellow | Opaque | 32 | |
Pyrrhotite # | strong | weak | Opaque | 32 | ||
Qandilite | light gray with a pinkish tint | Opaque | 32 | |||
Quadratite ! | grayish white with a bluish tint, dark red internal reflections in oil along cleavage tracks | Opaque to translucent | 8 | |||
Quenselite # | strong | Opaque | 32 | |||
Qusongite ! | steel gray with internal reflections | medium from deep gray to light brown | Opaque | 40 | ||
Radhakrishnaite | rose-brown | distinct | Opaque | 32 | ||
Raguinite | creamy grayish white perpendicular to the fibers, and rose colored parallel | strong, with orange dominant | strong, grayish white to rose | Opaque | 32 | |
Rambergite ! | steel gray with brown-red internal reflections | Opaque | 8 | |||
Ramdohrite # | white | moderate | very weak | Opaque | 32 | |
Rammelsbergite # | white, pure | strong, especially in blues | weak, in yellow to pinkish hue and bluish white | Opaque | 32 | |
Rasvumite | strong | strong | Opaque | 32 | ||
Rathite # | white with deep red internal reflections | intense, olive-green or yellow and bluish violet | strong | Nearly opaque | 32 | |
Rayite | white with greenish and bluish tints | perceptible, from dark blue to dark reddish brown | greenish to greenish blue | Opaque | 32 | |
Realgar # | gray white with abundant yellow to red internal reflections | strong, in polished sections | Transparent to translucent | 32 | ||
Renierite # | orange brown | strong, yellow to reddish orange | orange to brown or bronze with a violet tint | Opaque | 32 | |
Rhodarsenide ! | brownish with a pale green tinge | moderate to distinct | weak in air, distinct in oil | Opaque | 8 | |
Rhodium | bright white | Opaque | 8 | |||
Rhodostannite | reddish | distinct , from bluish gray to dark brown | Opaque | 32 | ||
Rhodplumsite | white | strong | notable, from cream-pink to grayish hue | Opaque | ||
Rickardite # | strong | strong, carmine to violet-gray | Opaque | 32 | ||
Rinmanite ! | moderate | Opaque | 8 | |||
Robinsonite # | strong, in blue-gray, cream-white and brown-gray | Opaque | ||||
Rohaite | yellowish cream to dull bluish gray | very strong, from yellowish cream to black, with dark red-purple colors present at extinction | distinct to strong | Opaque | 32 | |
Romanechite # | gray-white | strong, gray to white | strong | Opaque | 32 | |
Roquesite | gray with a slight bluish tint | very weak | Opaque | 32 |