@Freehold, many thanks for this. As always appreciate your...

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Robbo57

66 Posts.

25/10/16

13:09

Post #: 20102345
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Originally posted by Freehold ↑

Robbo,

Have had this in my kit bag for several months. It was a thesis paper written on the Bounty Gold deposit and surrounds circa 1993 so predominantly about the Gold but mentions pegmatite in the area seen at surface and intersected at the time. Geology structures are predominantly is north south trending surface outcrops at Prince of Wales (500m long) and Texas (6.3 km long ) are noted and mapped. Earl Grey, Van Uden under cover so not shown and Bounty also not shown.

Some Comments relating to pegmatite in area.

"...Graphic textured granites and pegmatites containing muscovite or biotite intrude as flat dipping sheets or vertical dykes along the regional ductile deformation zones, the northwest trending faults and other crustal weaknesses (Fig. 3). Schorl-rich, spodumene-rich and muscovite-rich pegmatites are observed. Rare rubellite-rich varieties have been mined (Camp No Name rubellite prospect). East-northeast trending fracture zones intruded by Proterozoic dolerite and **bro cut across the pegmatites and the greenstone belt..."

"...In the Bounty Mine, post-Dn shoal-rich pegmatites, spodumene-rich pegmatites, muscovite-rich pegmatites and the Proterozoic dyke suite occur as undeformed dykes or sills that truncate So, Sn and S The pegmatites occur as subvertical sills or n+ gently south-southeast dipping dykes and are truncated by east-northeast trending fracture zones along which the Proterozoic dykes intrude..."

"...Graphic textured granites and pegmatites intruded as flat dipping sheets or vertical dykes along D 1, Dn, D 1 structures and other crustal weaknesses. The n- n+ pegmatites and earlier formed structures and stratigraphy were cut across by east-northeast trending fracture zones which were intruded by Proterozoic dykes. ..."

Notice it mentions Pegmatite's are flat dipping sheets as plural... ie more than 1 so are there multiple, Earl Grey being possible only 1. The more vertical pegmatite dykes have been encountered closer to the Bounty mine IMO... so not sure what is south of Bounty and pegmatite looks to be undercover... With Outcrop 10-12km south of Bounty which I expect is now the old Rubelite mine area near MZN ground. WSA ground to the north of Texas looks interesting hence the prev JV comments.

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@Freehold, many thanks for this.

As always appreciate your tremendous contribution to HC, in particular the STT, along with your calm level headed approach.

Cheers.

KDR Price at posting: 58.5¢ Sentiment: None Disclosure: Held
2 Upvote

0 Great analysis

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