Aquila

The Aquila prospect comprises complex or reticulated, interbraided quartz veins in a propylitic envelope up to 20m wide in pyritic andesite. The area lies 3km SW of Orange Mountain and includes NE-trending veins at both Aquila and at Amethyst which appear to have been emplaced into extensional zones in a left-lateral, strike-slip domain. These veins display signs of multiple phases of fluid intrusion, cockade brecciation, and numerous periods of fracturing and refracturing, cross-cutting vein swarms varying from massive silica to finely crushed quartz and gold mineralization appears to occur in high grade structures including Aquila, Amethyst, and Altair shoots and Ankle and Origen veins.

High grade structures in the Aquila – Amethyst zone

High grade structures in the Aquila – Amethyst zone

Amethyst zone: 500’ by 1600’ on south side of Aquila prospect area. Drilling showed that ore-grade zones tend to comprise intensely crushed and fractured quartz with some intervals of poor recovery; an exception was intersected at the bottom of AQAME 2 where 100% recovery was achieved. Mineralization along the vein system is associated with structural intersections and changes in strike.

Exploration history

Mapping has shown a strong NE-SW lineation of valleys, possibly due to the horst and graben-style faulting seen in the drilled, high grade Shumagin structure which lies 3km NE of Orange mountain). This structural trend extends 1km SW to the coast as interpreted from NE-SW magnetic low anomalies with associated gold mineralised outcrops and intense hydrothermal alteration at surface.

Coastline 1km  SW of Aquila-Amethyst zone

Coastline 1km SW of Aquila-Amethyst zone

 (NOTE: Redstar Gold Corp observes that a qualified person has not done sufficient work to classify  historical estimates as current mineral resources or mineral reserves and Redstar is not treating the historical estimates as current mineral resources or mineral reserves).

In 1981, RAA estimated a body of 30,000 short tons grading 0.23 opt Au (7.9 ppm Au) based on three surface trenches along a 250’ strikelength and drill penetrations to 85’ depth. This is not a resource, but there is potential for ore beneath the existing drilling where RAA cut a high grade vein containing 3.31opt Au. 

(NOTE: Redstar Gold Corp observes that a qualified person has not done sufficient work to classify  this historical estimate as a current mineral resources or mineral reserves and Redstar is not treating the historical estimates as current mineral resources or mineral reserves).

•    Mapping and sampling show gold is hosted by Upper Group andesi tes:
      a)    associated with jaspe r, cher ty quartz and chalcedony in some veins indicating that mineralization is exposed in the upper levels of an epithermal system
      b)    in numerous quartz vei ns in parallel struc¬tures
      c)    in quartz-ri ch breccia zones
      d)    in zones of stockwork quartz vei ns
      e)    as rounded to flattened 20-40μm grains of free gol d in quartz-rich sections below surface oxidation as seen in polished sections of drill core

Soil lines from the Aquila vein to the Origin veins generaly returned low grades, although some samples contained up to 0.2ppm Au. Similarly, scattered rock samples are mostly <0.5g/t Au, but a couple contained >1.5g/t Au. In contrast, stream sediment results are highly anomalous, with numerous samples containing >1.5-7g/t Au as well as one that contained >7g/t Au indicating erosion of outcropping high-grade veins.

Rock trench and drill sample results at Aquila-Ankle-Amethyst

Rock trench and drill sample results at Aquila-Ankle-Amethyst

Research Associates of Alaska (RAA)  trenched and drilled during 1980-82. Of the 17 trenches (total of 1,008m), a third returned 2-4 m @ 3-11g/t Au. Specifically, the Amethyst vein was discovered when a channel sample returned 2.31m @ 9.1g/t Au + 48g/t Ag  (7’@ 0.32oz/t Au + 1.71 oz/t Ag).

Trenching on the Amethyst half graben looking NNW: assays from CT1 returned 12’ @ 0.105opt Au; assays from CT-7 returned 12’ @ 0.242opt Au

Trenching on the Amethyst half graben looking NNW: assays from CT1 returned 12’ @ 0.105opt Au; assays from CT-7 returned 12’ @ 0.242opt Au

The drilling (12 holes for a total of 1,355m) encountered grades of 1- 2g/t Au over 1-5m at depths of 30-60m in half the holes, with one hole returning 1m @ 8g/t and another 0.5m @ 100 g/t Au (Hole ID AQAME-2; RAA noted that “Core recovery was especially poor in some gold bearing sections …6-7% in critical intervals”).

Amethyst shoot
Trenching

0.323opt Au over 7.2’ including:
0.422opt Au over 1.5’ (#173669R)
0.318opt Au over 1.7’ (#173671R)
0.404opt Au over 2.3’ (#173672R)
(RAA 1981)

Drilling

Drill cuttings from DDHs at Amethyst show that core loss may have caused underestimation or total negation of some gold mineralized intervals.

Core – Research Associates of Alaska report: 1980

Hole ID

From '

To '

Recovery %

Au g/t

Ag g/t

Sample #

Notes

AQAME 1

132

135

83

9.5

26

210232H

 

 

138

145

7

13.1

16.8

210234H

 

AQAME 2

158.5

160

100

69.6

85.2

210283H

Bottom of hole

Amethyst zone drill results: AQAME2 was stopped too soon and bottomed in 69g/t Au material.

Sludges – Research Associates of Alaska report: 1980

Hole ID

From '

To '

Recovery %

Au g/t

Ag g/t

Sample #

AQAME 2

120

125

34

14

13.6

210284H

 

125

130

6

3.7

6.4

210285H

 

130

132

?

7.7

8.8

210286H

AQAME3

66

67

0

5.1

18

210296H

 

67

69

12

8.1

24.5

210297H

Skeleton core from AQAME-2: sample 210283 in the top right hand corner returned 1.4ft at 69.2g/t Au & 85.2g/t Ag (RAA 1980)

Skeleton core from AQAME-2: sample 210283 in the top right hand corner returned 1.4ft at 69.2g/t Au & 85.2g/t Ag (RAA 1980)

Altair shoot
Trenching

Discovery trench    0.335opt Au over 12’ (#18166R)
CT-7            0.242opt Au over 12’ (#182975R)
CT-1            0.105opt Au over 12’ (#182987R)
CT-5            0.105opt Au over 10’ (# 180140R)    (1981: Resource Associates of Alaska)

Drilling
AQALT 1 tr Au  and 5’ @ 0.1opt Ag
AQALT 2 tr Au and 5.5’ @ 0.16opt Ag    (1981 report: Resource Associates of Alaska Inc)

Ankle Creek vein
Rock grab    3.6’ of quartz-pyrite fragments in breccia contained 1.7g/t Au

Drilling
DDH AQANK2
90-95’        4’ @ 0.48g/t Au    (#202720) (55% recovery)    )
1’ @ 0.9g/t Au    (#202721)            ) (Parts of a 9’ white comb quartz vein)    

Subsequent sludges 
100-110’    2.9g/t Au (#202778H)
110-120’    1.9g/t Au (#202779H)
(All values reported by Resource Associates of Alaska: 1981)

Origin vein
Rock grabs

•    >10g/t Au in  6" Fe/Mn stained, braided pyritic quartz vein in andesite-jasperoid breccia 
 (#182839R)
•    5.5g/t Au in limonitic comb quartz    (#182949R)

Trenching
TR11    5’ @ 6.4g/t Au in trench 11         (#51178)
Recommended as drill target
(RAA 1981)
END

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