Tugtupite
| ID | 472 | |
|---|---|---|
| Mineral | Tugtupite | |
| Location | Tugtup Agtakôrfia - Kujalleq - Ilímaussaq - Greenland | |
| Fluorescence | LW-UV: check SW-UV: check |
|
| Mindat.org |
View Tugtupite information at mindat.org |
|
Mindat data
| ID | 4044 |
|---|---|
| Long ID | 1:1:4044:6 |
| Formula |
Na4BeAlSi4O12Cl
|
| IMA Status |
0 |
| Occurrence | As replacements of chkalovite in hydrothermal veins cutting sodalite syenite and syenite. |
| Discovery Year | 1962 |
| Diapheny | Translucent |
| Cleavage | On {101}; on {110} fair. |
| Tenacity | brittle |
| Colour | Commonly red, also white to pink, bluish white, greenish white |
| Hardness (min) | 4.0 |
| Hardness (max) | 4.0 |
| About the name | Named after its discovery locality, Tugtup Agtâkorfia, Narsaq municipality, Greenland. |
| Streak | white |
| Crystal System | Tetragonal |
| Cleavage Type | Distinct/Good |
| Fracture type | Step-Like |
| Morphology | Short tetragonal prisms with pyramids, sphenoids, and bisphenoids. Fine-grained aggregates; massive. |
| Twinning |
On (101), penetration twinning resulting in pseudocubic triplets; pseudotrigonal contact twins with composition planes |
| UV | Bright magenta-red to pink (SW UV). A stone was initially pink, and turned red immediately upon exposure to long-wave UV radiation. After the UV lamp was turned off, the stone returned to pink after several minutes. This chromatic change was repeatable. Specifically, it becomes dark red when exposed to UV radiation (or is irradiated by X-rays), and the colour fades to a paler red, pink or white when kept in the dark or exposed to bright light for a few minutes. This colour behaviour is probably due to an electron trapped in a Cl vacancy and associated sulphur polyanions. |
| Publication Year | 1962 |
| key_elements |
0 1 |
| shortcode_ima | Ttp |
| Group | Helvine Group |
Details
Price: € 5
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
None
| Symbol | Element | |
|---|---|---|
| Al | Aluminium | |
| Be | Beryllium |
|
| Cl | Chlorine |
|
| Na | Sodium | |
| O | Oxygen | |
| Si | Silicium |
