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Norrish and Selkirk's Beryl Show pegmatite, York Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 32° 4' 19'' South , 116° 20' 58'' East
Latitude & Longitude (decimal): -32.07191,116.34958
GeoHash:G#: qd69x97pt
Locality type:Pegmatite
Köppen climate type:Csa : Hot-summer Mediterranean climate


438 058E
6 450 726N

This deposit is difficult to reach without local knowledge. A four wheel drive vechile is needed. It is located in forest deep in the Darling Ranges, approximately 29 kilometres south east of Mundaring Weir. The easiest access route is to take a track north of Brookton Highway, and after crossing the second creek (Darkin River), park the car just before the top of the hill immediately after the creek, then walk cross-country east for 200 metres. There are no access tracks to the deposit.

It was first and only noted in 1944, and dismissed as uneconomic.

The pegmatite is 120 metres long and 46 metres wide trending north-east. The deposit consists of six shallow diggings with much mica, and one three metre deep trench dug by a backhoe, exposing the smokey quartz core. Little visited and largely unexplored. It is likely to remain that way as it is located within a conservation reserve.


Mineral List


5 valid minerals.

Rock Types Recorded

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Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Cenozoic
0 - 66 Ma



ID: 903636
ferruginous duricrust 38498

Age: Cenozoic (0 - 66 Ma)

Description: Ferruginous duricrust, laterite; pisolitic, nodular, vuggy; may include massive to pisolitic ferruginous subsoil, mottled clays, magnesite, reworked products of ferruginous and siliceous duricrusts, calcrete, gossan; residual ferruginous saprolite

Comments: regolith; synthesis of multiple published descriptions

Lithology: Regolith

Reference: Raymond, O.L., Liu, S., Gallagher, R., Zhang, W., Highet, L.M. Surface Geology of Australia 1:1 million scale dataset 2012 edition. Commonwealth of Australia (Geoscience Australia). [5]

Neoarchean - Mesoarchean
2500 - 3200 Ma



ID: 3189638
Archean crystalline metamorphic rocks

Age: Archean (2500 - 3200 Ma)

Comments: Yilgarn Craton

Lithology: Amphibolite/granulite grade orthogneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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.

References

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Calderwood, M.A., Grguric, B.A., Jacobson, M.I., (2007) Guidebook to the Pegmatites of Western Australia.

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