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Allen's Find Gold Mine, Mount Jackson Goldfield, Yilgarn Shire, Western Australia, Australiai
Regional Level Types
Allen's Find Gold MineMine
Mount Jackson GoldfieldOre Field
Yilgarn ShireShire
Western AustraliaState
AustraliaCountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
30° 11' 2'' South , 119° 15' 6'' East
Latitude & Longitude (decimal):
Locality type:


A Mr Allen pegged several leases on the field, this particular one in 1911, which bears his name. Cummings (surname) is also noted as co-owner. Allen is reported to have crushed 51 tonnes from the show in 1914. GML 1979. In this year there were two shafts on the lease to 240 and 113 feet.

About 1 kilometre south of the Bullfinch-Evanston and Windarling mine haul road intersection, a track heads north-west. After 500 metres a small group of workings is encountered bordering the north side of the track. This track continues west, then south-west for 10 kilometres to the Mt Jackson homestead ruins.

In 1911, there were 4 leases here, but only GML 1979 was being worked. Described as being on a good strong outcrop of quartz, 2 feet 6 inches wide on average, north-south striking, and dipping shallowly to the east. The lease had a shaft to 15 feet deep. The first two years of operations achieved 19 dwt, however the third year of 1914, values had decreased significantly.

Gold was formed at Allen's Find by the intersection of two solution flows with a different composition, temperature and pressure. At the intersections the reefs have expanded, with either the solution flow slowing with deposition, or gold as a reaction to the meeting of the two flows.

The lode is found in decomposed acid igneous rock. The country rock is soft greenish white kaolin, traversed by veinlets of quartz. The main reef is 2 to 5 feet wide of uniform stone, striking north north-west and dipping 28 degrees east. A couple of cross reefs are found in the shaft with gold enrichment at the intersections.

A seam of dark 'pug' (clay?) less than 1 inch thick follows the footwall of the reef. The ore had a streaky appearance of laminated hematite, quartz and jasper. At the bottom of the shaft was a cross reef/main reef intersection, the quartz brecciated, with cemented black opaque quartz, stained with either hematite or manganese.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


4 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 Diagram

Detailed Mineral List:

Gold
Formula: Au
Reference: Blatchford, T., Honman, C.S., Simpson, E.S., Farquarson, R.A. (1917) The Geology of the Yilgarn Goldfield and Mineral Resources, Part III, The Gold Belt North of Southern Cross including Westonia. Geological Survey of Western Australia, State Government of Western Australia, Bulletin No. 71.
Hematite
Formula: Fe2O3
Reference: Blatchford, T., Honman, C.S., Simpson, E.S., Farquarson, R.A. (1917) The Geology of the Yilgarn Goldfield and Mineral Resources, Part III, The Gold Belt North of Southern Cross including Westonia. Geological Survey of Western Australia, State Government of Western Australia, Bulletin No. 71.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Blatchford, T., Honman, C.S., Simpson, E.S., Farquarson, R.A. (1917) The Geology of the Yilgarn Goldfield and Mineral Resources, Part III, The Gold Belt North of Southern Cross including Westonia. Geological Survey of Western Australia, State Government of Western Australia, Bulletin No. 71.
'Manganese Oxides'
Reference: Blatchford, T., Honman, C.S., Simpson, E.S., Farquarson, R.A. (1917) The Geology of the Yilgarn Goldfield and Mineral Resources, Part III, The Gold Belt North of Southern Cross including Westonia. Geological Survey of Western Australia, State Government of Western Australia, Bulletin No. 71.
Quartz
Formula: SiO2
Reference: Blatchford, T., Honman, C.S., Simpson, E.S., Farquarson, R.A. (1917) The Geology of the Yilgarn Goldfield and Mineral Resources, Part III, The Gold Belt North of Southern Cross including Westonia. Geological Survey of Western Australia, State Government of Western Australia, Bulletin No. 71.
Quartz var. Jasper
Reference: Blatchford, T., Honman, C.S., Simpson, E.S., Farquarson, R.A. (1917) The Geology of the Yilgarn Goldfield and Mineral Resources, Part III, The Gold Belt North of Southern Cross including Westonia. Geological Survey of Western Australia, State Government of Western Australia, Bulletin No. 71.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var. Jasper4.DA.05SiO2
Group 9 - Silicates
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified Minerals, Rocks, etc.
'Manganese Oxides'-

List of minerals for each chemical element

HHydrogen
H KaoliniteAl2(Si2O5)(OH)4
OOxygen
O QuartzSiO2
O KaoliniteAl2(Si2O5)(OH)4
O HematiteFe2O3
AlAluminium
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si QuartzSiO2
Si KaoliniteAl2(Si2O5)(OH)4
FeIron
Fe HematiteFe2O3
AuGold
Au GoldAu

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
North Western Advocate and the Emu Bay Times newspaper (Tasmania) (1911), An Auriferous Track. The Mount Jackson Field. A Prospector's Report, 10/01/1911
The Southern Cross Times newspaper (1911), Geological Survey of Western Australia. The Mount Jackson Centre. Yilgarn Goldfield, 30/09/1911
Blatchford, T., Honman, C.S., Simpson, E.S., Farquarson, R.A. (1917) The Geology of the Yilgarn Goldfield and Mineral Resources, Part III, The Gold Belt North of Southern Cross including Westonia. Geological Survey of Western Australia, State Government of Western Australia, Bulletin No. 71.

Other Regions, Features and Areas containing this locality

Australia
Australian PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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