Johannsenite
| ID | 466 | |
|---|---|---|
| Mineral | Johannsenite | |
| Location | Broken Hill - Broken Hill district - Australia | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Johannsenite information at mindat.org |
|
Mindat data
| ID | 2103 |
|---|---|
| Long ID | 1:1:2103:2 |
| Formula |
CaMnSi2O6
|
| IMA Status |
0 1 |
| Discovery Year | 1932 |
| Diapheny | Translucent |
| Colour | dark brown, pale brownish, blue-green, pale greenish, grey-white, colourless. |
| Hardness (min) | 6.0 |
| Hardness (max) | 6.0 |
| About the name | Named in 1932 by Waldemar Theodore Schaller in honor of Albert Johannsen [Belle Plaine, Iowa December 3, 1871 - January 11, 1962 Winter Park, Florida, USA], Professor and petrologist, University of Chicago, Chicago, Illinois, USA. Johannsen's contribution are noteworthy. He established quantitative definitions of rock analysis and rock classifications as well as redesigning the petrographic microscope. His five volume Petrography of the Igneous Rocks is a classic in petrography. |
| Streak | white |
| Crystal System | Monoclinic |
| Cleavage Type | Distinct/Good |
| Fracture type | Irregular/Uneven,Step-Like |
| UV | Not fluorescent in UV |
| Publication Year | 1938 |
| shortcode_ima | Jhn |
| Group | Clinopyroxene Subgroup |
Details
Price: € 5
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
None
| Symbol | Element | |
|---|---|---|
| Ca | Calcium | |
| Mn | Manganese | |
| O | Oxygen | |
| Si | Silicium |