Vivianite
| ID | 227 | |
|---|---|---|
| Mineral | Vivianite | |
| Location | Huanuni Mine - Huanuni - Oruro - Bolivia | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Vivianite information at mindat.org |
|
Mindat data
| ID | 4194 |
|---|---|
| Long ID | 1:1:4194:8 |
| Formula |
Fe2+3(PO4)2 · 8H2O
|
| IMA Status |
0 1 |
| Other Occurrences | A secondary mineral found in a number of geologic environments: The oxidation zone of metal ore deposits, particularly associated with gossan; in granite pegmatites containing phosphate minerals; and in clays and glauconitic sediments, and in recent alluvial deposits replacing organic material, peat, lignite, bog iron ores and forest soils. |
| Discovery Year | 1817 |
| Diapheny | Transparent,Translucent |
| Cleavage |
Perfect on {010}, in traces on |
| Tenacity | sectile |
| Colour | Colourless and transparent when fresh, quickly turning pale to deep blue, greenish-blue or bluish-green. |
| Hardness (min) | 1.5 |
| Hardness (max) | 2.0 |
| Lustre | Vitreous, Earthy |
| About the name | Named by Abraham Gottlob Werner in 1817 after John Henry Vivian (August 9, 1785 - February 10, 1855), an English (Welsh-Cornish) politician, mine owner, and mineralogist living in Truro, Cornwall and discoverer of the mineral. (Note: Many references erroneously state that the mineral was named for J. G. Vivian, but the middle initial seems to have been a typographical error.) |
| Streak | Colourless to bluish white, quickly changing to dark blue or brown |
| Crystal System | Monoclinic |
| Cleavage Type | Perfect |
| Fracture type | Fibrous |
| Morphology | Crystals typically prismatic parallel to [001], also flattened {010}, more rarely {100} and equant; often rounded into blade-like or lanceolate shapes by vicinal development; found in stellate clusters, as reniform or globular aggregates, tabular masses or concretions, crusts with fibrous to bladed structure, and earthy to powdery. |
| Twinning | Lamellar twinning on {010}, corresponding to approx. (304). |
| UV | Not Fluorescent. |
| Comment Luster | Pearly on cleavage {010}, dull when massive. |
| shortcode_ima | Viv |
| Group | Vivianite Group |
Details
Price: € 5
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Fe | Iron | |
| H | Hydrogen | |
| O | Oxygen | |
| P | Phosphorus |
|