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Platt Prospect, Dundas mineral field, Zeehan mining district, West Coast municipality, Tasmania, Australiai
| Regional Level Types | |
|---|---|
| Platt Prospect | Prospect |
| Dundas mineral field | Mining Field |
| Zeehan mining district | Mining District |
| West Coast municipality | Municipality |
| Tasmania | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
41° 52' 53'' South , 145° 26' 20'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Zeehan | 845 (2012) | 8.5km |
| Rosebery | 1,035 (2012) | 14.0km |
| Tullah | 196 (2014) | 22.5km |
| Queenstown | 2,352 (2012) | 24.2km |
| Gormanston | 169 (2014) | 25.2km |
A small underground silver-lead mine, presently worked for specimen minerals, especially crocoite and pyromorphite.
This property is situated at the eastern boundary of the West Comet and south-west of the Comet mine, on the north slopes of Kosminsky Hill, about 3.5 km from Dundas.
It was probably originally on the Kosminsky lease, but in 1925 it was held under prospector’s license by Charles Platt.
It is probably the deposit described as the "crocoite lode" by Montgomery (1890).
The lode was reopened by Mike Phelan and Joe Pringle in the 1970s, and was taken on by Bruce Stark from the 1990s to ~2018.
Shane Stanfield is the current leaseholder.
There were two lodes striking NNE, 70 m apart and up to 28 m wide in a fault zone near a contact between serpentinite and Cambrian shales.
The sulphide ores consisted mostly of galena, sphalerite and jamesonite, occurring in veins up to 1.3 m wide.
Weathered parts of the lodes contained crocoite, pyromorphite, mimetite and cerussite in ferro-manganese gossan and quartz.
One lode contains a fair proportion of crocoite and some bindheimite, rich in silver.
Well crystallised pyrolusite and chalcophanite are also present in the gossan.
In recent years, small-scale specimen mining has produced attractive crocoite and pyromorphite associations, and good crystalline pyrolusite rarely associated with crocoite, plus minor cerussite.
Specimens typically exhibit small sharply terminated orange-red crocoite crystals on dark green pyromorphite, with a soft yellow-brown gossan or vein quartz matrix.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Bindheimite' Formula: Pb2Sb2O6O |
| ⓘ Cerussite Formula: PbCO3 |
| ⓘ Chalcophanite Formula: ZnMn4+3O7 · 3H2O |
| ⓘ Crocoite Formula: PbCr6+O4 |
| ⓘ Cryptomelane Formula: K(Mn4+7Mn3+)O16 References: Carnegie Museum of Natural History analysisIdentified by Chris Emproto: XRD |
| ⓘ Galena Formula: PbS |
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Jamesonite Formula: Pb4FeSb6S14 |
| ⓘ 'Limonite' |
| ⓘ Mimetite Formula: Pb5(AsO4)3Cl |
| ⓘ Pyrolusite Formula: Mn4+O2 Habit: platy or blocky crystals Colour: black |
| ⓘ Pyromorphite Formula: Pb5(PO4)3Cl |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ 'Wad' |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Jamesonite | 2.HB.15 | Pb4FeSb6S14 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| ⓘ | 'Bindheimite' | 4.DH.20 | Pb2Sb2O6O |
| ⓘ | Cryptomelane | 4.DK.05a | K(Mn4+7Mn3+)O16 |
| ⓘ | Chalcophanite | 4.FL.20 | ZnMn4+3O7 · 3H2O |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Cerussite | 5.AB.15 | PbCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Crocoite | 7.FA.20 | PbCr6+O4 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Mimetite | 8.BN.05 | Pb5(AsO4)3Cl |
| ⓘ | Pyromorphite | 8.BN.05 | Pb5(PO4)3Cl |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Wad' | - | |
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
Australia
- Delamerian OrogenOrogen
- Tasmania
- Thylacine ProvinceGeologic Province
Australian PlateTectonic Plate
- Western TasmaniaOrogenic Belt
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Platt Prospect, Dundas mineral field, Zeehan mining district, West Coast municipality, Tasmania, Australia