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Portaminna Mine, Roebourne, City of Karratha, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Portaminna Mine | Mine (Inactive) |
| Roebourne | - not defined - |
| City of Karratha | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
20° 45' 48'' South , 117° 6' 25'' East
Latitude & Longitude (decimal):
Type:
Mine (Inactive) - last checked 2021
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Roebourne | 2,112 (2013) | 4.2km |
| Point Samson | 273 (2014) | 17.4km |
| Karratha | 11,728 (2011) | 27.2km |
| Millars Well | 2,197 (2014) | 30.2km |
| Nickol | 4,289 (2014) | 32.4km |
Other/historical names associated with this locality:
Tofterminna; Porterminna; Eureka; Golden Pile
Portaminna (also Tofterminna GML 135, Porterminna GML 136, formerly Eureka GML 94 and Golden Pile GML 90). Near the Weerianna mine, about 2 kilometres west of Roebourne. Gold.
Reported in 1908 as two old shafts, and a recent discovery between the two. The Golden Pile shaft reached 90 metres deep, and was full of water. It was on a reef 2 feet thick of white quartz, striking north, dipping 64 degrees east, or vertical, worth 15-20 dwt. It was prospected in 1896, and some beautiful specimen stone was recovered, but there are no official crushing records.
The new find in 1908, was in a hole 6 feet deep of bluish quartz, partly stained by malachite, and a few specks of galena, with some very rich fine gold.
The Eureka shaft is 30 feet deep on a reef striking north-east, dipping south-east, described as a hard bar of bluish quartz with gold.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
4 valid minerals.
Detailed Mineral List:
| ⓘ Galena Formula: PbS |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Galena | 2.CD.10 | PbS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| Cu | Copper | |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- Pilbara CratonCraton
- Ruth Well Nickel Metallogenic ProvinceGeologic Province
- Warakurna Large Igneous ProvinceGeologic Province
- West Australian ElementCraton
Australian PlateTectonic Plate
- West Australian Craton
- Pilbara CratonCraton
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