God for us to design products, we are the porters of nature!
| Illite | |
Chemical Formula |
(K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)] |
Species |
Silicates |
Crystal System |
Monoclinic |
Mohs Scale |
1-2 |
Specific Gravity |
2.6-2.9 |
Color |
Grey-white to silvery-white, greenish-gray |
Streak |
white |
Luster |
Pearly |
Refractive Index |
n = 1.535 - 1.570 n = 1.555 - 1.600 n = 1.565 - 1.605 |
Diaphaneity |
Translucent |
Cleavage |
PerfectPerfect on . |
Fracture |
Micaceous |
| Crystal Habit：Micaceous aggregates | |
| Geological Setting：Found in a wide variety of environments, the materials of this series form by either weathering or hydrothermal alteration of muscovite-phengite; but some is authigenic or could be derived from alteration of K-feldspars or recrystallization of smectites. Common in sediments, clays, marls, shales and some slates. Interstratified illite-smectite converts to illite at depths. | |
 |
 |
 |
 |
 |
 |
 |
 |
 |
YueGongAnBei 44051102000467
| 
