Dumortierite
| ID | 427 | |
|---|---|---|
| Mineral | Dumortierite | |
| Location | Ampanihy - Atsimo-Andrefana - Madagascar | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Dumortierite information at mindat.org |
|
Mindat data
| ID | 1329 |
|---|---|
| Long ID | 1:1:1329:7 |
| Formula |
AlAl6BSi3O18
|
| IMA Status |
0 1 |
| Other Occurrences | In Al rich regionally metamorphosed rocks disseminated and in veinlets cutting schist, also in pegmatitic veins. |
| Discovery Year | 1879 |
| Diapheny | Translucent |
| Cleavage | Distinct on {100}, poor on {110}, |
| Tenacity | brittle |
| Colour | Blue, greenish-blue, violet-blue, pale blue, pink, red |
| Hardness (min) | 7.0 |
| Hardness (max) | 8.0 |
| Lustre | Vitreous |
| About the name | Named in honour of Eugène Dumortier (3 December 1801, Lyon, France – 13 August 1876, Lyon, France), palaeontologist who wrote 'Études Paléontologiques sur les dépôts jurassiques du Bassin du Rhône'. |
| Crystal System | Orthorhombic |
| Cleavage Type | Distinct/Good |
| Twinning | Common on {110} sometimes producing trillings. |
| UV | blue shortwave-excited luminescence excited by SW UV caused by titanate groups (TiO6) |
| Comment Luster | Vitreous to dull. |
| Publication Year | 1881 |
| key_elements |
0 |
| shortcode_ima | Dum |
| Group | Dumortierite Group |
Details
Price: € 2
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Al | Aluminium | |
| B | Boron | |
| O | Oxygen | |
| Si | Silicium |