Kyanite
| ID | 72 | |
|---|---|---|
| Mineral | Kyanite | |
| Location | Minas Gerais - Brazil | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Kyanite information at mindat.org |
|
Mindat data
| ID | 2303 |
|---|---|
| Long ID | 1:1:2303:6 |
| Formula |
Al2OSiO4
|
| IMA Status |
0 1 |
| Occurrence | In medium to high pressure and low to medium temperature metamorphic rocks. |
| Other Occurrences | Metamorphic rocks of moderately high-pressure regional metamorphism. |
| Industrial | Ceramics |
| Diapheny | Transparent,Translucent |
| Cleavage | Perfect on (100), good on (010) |
| Tenacity | brittle |
| Colour | Blue, white, light gray, green, rarely yellow, orange, pink |
| Hardness (min) | 5.5 |
| Hardness (max) | 7.0 |
| Lustre | Vitreous |
| About the name | Named in 1789 by Abraham Gottlieb Werner from the Greek word "kyanos", meaning "blue," the common color of the species. The French spelling, "Cyanite", was commonly used by mineralogists through much of the 19th and early 20th centuries. |
| Streak | Colorless |
| Crystal System | Triclinic |
| Cleavage Type | Perfect |
| Fracture type | Splintery |
| Morphology | Crystals bladed or tabular. |
| Twinning | Lamellar on (100), common |
| UV | Not usually fluorescent. Weak pink-red fluorescence under longwave reported at Thomaston Dam, Connecticut (Don Swenson, pers. com., 2017). Robbins (1994) indicated that some kyanite fluoresces: "From Pfitsch in the Tyrol, Austria, colorless blades of kyan |
| Comment Luster | Somewhat pearly on {100} || to the perfect cleavage |
| shortcode_ima | Ky |
Details
Price: € 15
Dimensions: Not registered
Weight: 28 g
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Al | Aluminium | |
| O | Oxygen | |
| Si | Silicium |