|
Luster |
Luster Description |
|
Adamantine |
High index of refraction, eg. Rutile. |
|
Adamantine - Greasy |
Between adamantine and greasy. |
|
Adamantine - Metallic |
Between adamantine and metallic. |
|
Adamantine - Pearly |
Between pearly and adamantine. |
|
Adamantine - Resinous |
Between resinous and adamantine, eg.
Sphalerite. |
|
Adamantine - Silky |
Between silky and adamantine. |
|
Chatoyant |
Numerous hair-like inclusions aligned to
produce "catseye" figure. |
|
Earthy (Dull) |
Completly dull, eg. clays. |
|
Greasy (Oily) |
Surface alteration, eg. Halite. |
|
Metallic |
Specular reflection, eg. Pyrite or Mercury. |
|
Metallic - Dull |
Has a dull metallic lustesr. |
|
Pearly |
Formed by numerous partly-developed
cleavages, eg. Pearls. |
|
Resinous |
Luster of Resin, eg. Amber |
|
Resinous - Greasy |
High index of refraction with surface
alteration, eg. Sulphur. |
|
Resinous - Metallic |
High index of refraction in nearly opague
minerals |
|
Schiller |
Caused by numerous platy inclusions or
separations. |
|
Silky |
Noticeable shiney direction, eg. Satin
Spar. |
|
Silky - Pearly |
Silky and pearly lusters. |
|
Sub Metallic |
Almost metallic reflection, eg. Cuprite. |
|
Subadamantine |
Not quite adamantine in luster. |
|
Vitreous (Glassy) |
Luster of broken glass, eg. Quartz. |
|
Vitreous - Adamantine |
Has aspects of both vitreous & adamantine
lusters. |
|
Vitreous - Dull |
Has aspects of both vitreous & dull
lusters. |
|
Vitreous - Greasy |
Has aspects of both vitreous & greasy
lusters, eg. Nepheline. |
|
Vitreous - Metallic |
Has aspects of both vitreous & metallic
lusters. |
|
Vitreous - Pearly |
Has aspects of both vitreous & pearly
lusters. |
|
Vitreous - Resinous |
Has aspects of both vitreous & resinous
lustesr. |
|
Vitreous - Silky |
Has aspects of both vitreous & silky
lusters. |
|
Vitreous - Waxy |
Has aspects of both vitreous & waxy
lusters. |
|
Waxy |
Fairly dull luster, eg. wax. |
