Wannon Falls, Wannon River, Wannon, Southern Grampians Shire, Victoria, Australiai
| Regional Level Types | |
|---|---|
| Wannon Falls | - not defined - |
| Wannon River | River |
| Wannon | - not defined - |
| Southern Grampians Shire | Shire |
| Victoria | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
37° 40' 35'' South , 141° 50' 26'' East
Latitude & Longitude (decimal):
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hamilton | 10,104 (2017) | 17.6km |
Mindat Locality ID:
12144
Long-form identifier:
mindat:1:2:12144:9
GUID (UUID V4):
ca04adc5-c31e-4bac-9110-961e85ce6041
"Wannon falls is situated on the Wannon River just south of the Glenelg Highway at Redruth, approximately 7 km west of Hamilton. Vivianite was first recorded from Wannon Falls in 1883. F.M.Krause, Curator at the Ballarat School of Mines, reporting on minerals examined in his laboratory for the 1883 Annual Report for the School of Mines, described vivianite crystals as flat oblique prisms, upwards of two inches in length, grouped in radiating positions. The crystals occur with sub-fossil wood embedded in volcanic tuff under the basalt ledge of the Wannon Falls, at Redruth."
NOTE: The site is located in a protected State park area and collecting is no longer permitted.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
3 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| β 'Limonite' Description: "Some groups of vivianite crystals have been completely replaced by limonite"
This description given in 1993 matches the description of the Santabarbaraite occurrence at Wannon Falls which was analysed in 2000.
It is therefore most likely limonite labelled specimens from Wannon Falls are in fact Santabarbaraite. |
| β Santabarbaraite Formula: Fe3+3(PO4)2(OH)3 · 5H2O Description: Santabarbarite has formed as a result of the oxidation of vivianite.
"This involves progressive oxidation of Fe 2+ accompanied by conversion of H2O ligands to OH ions. Such a process leads to a gradual collapse of the vivianite structure as hydrogen bonds are eliminated. Santabarbaraite is the end product of this process.
Santabarbaraite is brown to light brown in hand specimens but appears yellowish amber under the microscope."" |
| β Siderite Formula: FeCO3 Description: "Siderite is associated with vivianite at Wannon Falls, occurring as translucent brown scalenohedral crystals approximately 1 mm across, and as botryoidal masses." |
| β Vivianite Formula: Fe2+Fe2+2(PO4)2 · 8H2O Description: "Typical specimens consists of radiating groups of dark green to blue bladed crystals measuring up to 7 cm long. Other specimens consists of opaque dark blue crystals with curved faces, resembling clusters of mussel shells, with individual crystals up to 2 cm high but more typically less than 1 cm.
The vivianite crystals, when fresh from the ground are transparent, and of bright sea-green colour when viewed against the cleavage planes, but they rapidly become opaque blue on exposure.
Siderite is often associated with vivianite."" |
List of minerals arranged by Strunz 10th Edition classification
| Group 5 - Nitrates and Carbonates | |||
|---|---|---|---|
| β | Siderite | 5.AB.05 | FeCO3 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| β | Vivianite | 8.CE.40 | Fe2+Fe2+2(PO4)2 Β· 8H2O |
| β | Santabarbaraite | 8.CE.80 | Fe3+3(PO4)2(OH)3 Β· 5H2O |
| Unclassified | |||
| β | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
| H | β Santabarbaraite | Fe33+(PO4)2(OH)3 · 5H2O |
| C | Carbon | |
| C | β Siderite | FeCO3 |
| O | Oxygen | |
| O | β Siderite | FeCO3 |
| O | β Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
| O | β Santabarbaraite | Fe33+(PO4)2(OH)3 · 5H2O |
| P | Phosphorus | |
| P | β Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
| P | β Santabarbaraite | Fe33+(PO4)2(OH)3 · 5H2O |
| Fe | Iron | |
| Fe | β Siderite | FeCO3 |
| Fe | β Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
| Fe | β Santabarbaraite | Fe33+(PO4)2(OH)3 · 5H2O |
Other Regions, Features and Areas containing this locality
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References
