Rye Patch Gold Corp (TSX.V: RPM; OTCQX: RPMGF; FWB: 5TN) (the “Company” or “Rye Patch”) is pleased to report the results of recent bottle-roll metallurgical test work from the 100% controlled Lincoln Hill project. Kappes, Cassidy & Associates (KCA) of Reno, Nevada completed the bottle roll metallurgical testing. Twelve composites were utilized and are reported below.
HIGHLIGHTS:
- A total of nine oxide composites yielded an average recovery of 83% for gold and 84% for silver, with values ranging between 70% to 95% for gold, and 51% to 95% for silver;
- Three sulfide composites returned an average of 80% recovery for gold and 61% recovery for silver; and
- The twelve combined oxide and sulfide composites have an average recovery of 82% for gold and 79% for silver;
- KCA performed metallurgical tests on 12 separate composites that were composited by rock type, silicification, oxidation state and gold grade.
A total of twelve composites were identified incorporating attributes of rock type, alteration, and oxidation state within three gold grade ranges for the Lincoln Hill deposit. The composites for bottle-roll metallurgical testing were constructed from drillhole intervals with similar grades from multiple drillhole intercepts across the deposit. Table 1 shows the drillholes used for each composite.
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Table 1: Drill Holes Used to Make Composites
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Composite
|
Number of
Holes |
Hole Numbers
|
|
1.1
|
6
|
LR-018, LR-024, LR-053, LR-054, LR-059, LR-067
|
|
1.2
|
8
|
LR-018, LR-024, LR-058, LR-067, LR-079, LR-084, LR-090, LR-092
|
|
1.3
|
3
|
LR-067, LR-079, LR-084
|
|
1.4
|
5
|
LR-053, LR-054, LR-056, LR-058, LR-079
|
|
2.1
|
8
|
LR-018, LR-024, LR-053, LR-059, LR-067, LR-079, LR-084, LR-092
|
|
2.2
|
8
|
LR-018, LR-024, LR-061, LR-079, LR-084, LR-086, LR-090, LR-092
|
|
2.3
|
2
|
LR-067, LR-084
|
|
2.4
|
5
|
LR-053, LR-079, LR-082, LR-084, LR-087
|
|
3.1
|
7
|
LR-018, LR-024, LR-053, LR-059, LR-067, LR-079, LR-092
|
|
3.2
|
12
|
LR-018, LR-024, LR-050, LR-050, LR-053, LR-058, LR-061, LR-067,
LR-079, LR-084, LR-086, LR-090, LR-092 |
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3.3
|
2
|
LR-067, LR-084
|
|
3.4
|
3
|
LR-079, LR-082, LR-084
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Table 2 shows the gold grade ranges used for the composites, and the sub grouping nomenclature used to identify the composite rock type, alteration, and oxidation attributes.
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Table 2: Composite Group Explanation
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Composite Groups
|
Grade Range
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1
|
(Au > 0.50 ppm)
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2
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(0.20 ppm < Au < 0.49 ppm)
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|
3
|
(0.086 ppm < Au < 0.20 ppm)
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Sub Groups
|
Oxide
|
Silicification
|
Sulfide
|
|
0.1
|
1
|
2 –> 3
|
0 –> 1
|
|
0.2
|
2
|
2 –> 3
|
0 –> 1
|
|
0.3
|
3
|
2 –> 3
|
0 –> 1
|
|
0.4
|
N/A
|
2 –> 3
|
1 –> 3
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Table 3 shows the results of the 96-hour metallurgical bottle-roll tests for 10 mesh, 150 mesh and 200 mesh on oxide material along with reagent consumption.
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Table 3: Lincoln Hill Oxide Material – 96 Hour Bottle Roll Test
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Composite Number
|
Crush Size,
mesh Tyler |
Target p80 Size,
mesh Tyler |
Au
Extracted, % |
Ag
Extracted, % |
Consumption
NaCN, lbs/st |
Addition
Ca(OH)2, lbs/st |
|
Comp 1.1
|
10
|
—
|
92%
|
94%
|
0.25
|
2.00
|
|
Comp 1.1
|
—
|
150
|
94%
|
95%
|
1.44
|
2.00
|
|
Comp 1.1
|
—
|
200
|
95%
|
95%
|
1.24
|
2.00
|
|
Comp 1.2
|
10
|
—
|
82%
|
83%
|
0.47
|
3.00
|
|
Comp 1.2
|
—
|
150
|
93%
|
86%
|
0.82
|
2.00
|
|
Comp 1.2
|
—
|
200
|
93%
|
87%
|
1.02
|
2.00
|
|
Comp 1.3
|
10
|
—
|
70%
|
78%
|
0.36
|
3.00
|
|
Comp 1.3
|
—
|
150
|
82%
|
85%
|
1.97
|
2.00
|
|
Comp 1.3
|
—
|
200
|
84%
|
86%
|
3.11
|
2.00
|
|
Comp 2.1
|
10
|
—
|
74%
|
90%
|
1.03
|
2.00
|
|
Comp 2.1
|
—
|
150
|
89%
|
95%
|
2.33
|
2.00
|
|
Comp 2.1
|
—
|
200
|
83%
|
95%
|
2.82
|
2.00
|
|
Comp 2.2
|
10
|
—
|
76%
|
77%
|
0.76
|
2.00
|
|
Comp 2.2
|
—
|
150
|
82%
|
88%
|
1.29
|
2.00
|
|
Comp 2.2
|
—
|
200
|
83%
|
85%
|
2.05
|
2.00
|
|
Comp 2.3
|
10
|
—
|
72%
|
51%
|
0.44
|
2.00
|
|
Comp 2.3
|
—
|
150
|
83%
|
68%
|
2.49
|
2.00
|
|
Comp 2.3
|
—
|
200
|
80%
|
70%
|
2.93
|
2.00
|
|
Comp 3.1
|
10
|
—
|
73%
|
81%
|
0.53
|
3.00
|
|
Comp 3.1
|
—
|
150
|
87%
|
89%
|
2.29
|
2.00
|
|
Comp 3.1
|
—
|
200
|
89%
|
89%
|
2.98
|
2.00
|
|
Comp 3.2
|
10
|
—
|
77%
|
68%
|
0.39
|
2.00
|
|
Comp 3.2
|
—
|
150
|
84%
|
85%
|
1.22
|
2.00
|
|
Comp 3.2
|
—
|
200
|
83%
|
83%
|
2.49
|
2.00
|
|
Comp 3.3
|
10
|
—
|
70%
|
90%
|
0.58
|
1.00
|
|
Comp 3.3
|
—
|
150
|
84%
|
94%
|
0.85
|
2.00
|
|
Comp 3.3
|
—
|
200
|
75%
|
94%
|
2.79
|
2.00
|
A total of nine oxide composites yielded an average recovery of 83% for gold and 84% for silver, with values ranging between 70% to 95% for gold, and 51% to 95% for silver.
Table 4 shows the results of the metallurgical bottle-roll tests for 10 mesh, 150 mesh and 200 mesh on sulfide material. The three sulfide composites returned an average of 80% recovery for gold and 61% recovery for silver.
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Table 4: Lincoln Hill Sulfide Material – 96 Hour Bottle Roll Test
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|
Composite
Number |
Crush Size,
mesh Tyler |
Target p80 Size,
mesh Tyler |
Au
Extracted, % |
Ag
Extracted, % |
Consumption
NaCN, lbs/st |
Addition
Ca(OH)2, lbs/st |
|
Comp 1.4
|
10
|
—
|
72%
|
60%
|
0.96
|
2.00
|
|
Comp 1.4
|
—
|
150
|
93%
|
73%
|
2.83
|
2.00
|
|
Comp 1.4
|
—
|
200
|
92%
|
74%
|
3.36
|
2.00
|
|
Comp 2.4
|
10
|
—
|
73%
|
26%
|
1.05
|
2.00
|
|
Comp 2.4
|
—
|
150
|
85%
|
38%
|
3.08
|
2.00
|
|
Comp 2.4
|
—
|
200
|
82%
|
37%
|
3.03
|
2.00
|
|
Comp 3.4
|
10
|
—
|
65%
|
73%
|
1.13
|
1.00
|
|
Comp 3.4
|
—
|
150
|
78%
|
86%
|
2.80
|
2.00
|
|
Comp 3.4
|
—
|
200
|
76%
|
84%
|
2.45
|
2.00
|
William Howald, the Company’s President and CEO commented, “The results of the Lincoln Hill bottle-roll tests are very encouraging. The gold and especially the silver recoveries show the unique value opportunity in the district. The gold and silver recoveries reported are similar in character to the nearby operation at Rochester, and the advancing Spring Valley deposit.”
The results from 10 mesh (1.7 mm) on oxide material averaged recoveries of 76% recovery for gold and 79% for silver while 150 mesh on oxide material averaged recoveries of 86% for gold and 87% for silver, and 200 mesh recoveries on oxide material averaged recoveries of 85% for gold and 87% for silver. The 10% difference between 10 mesh and 150 mesh indicates that recoveries are susceptible to particle size thus Au and Ag recoveries could be enhanced by particle size.
Mr. William Howald, AIPG Certified Professional Geologist #11041, Rye Patch Gold’s CEO and President, is a Qualified Person as defined under National Instrument 43-101. He has verified the information contained in, and has reviewed and approved the contents of, this news release.
The Company is a Tier 1, Nevada-focused and discovery-driven company seeking to build a sizeable inventory of gold and silver resource assets in the mining friendly state of Nevada, USA. The Company’s seasoned management team is engaged in the acquisition, exploration, and development of quality resource-based gold and silver projects. Rye Patch Gold US Inc. controls over 75 square kilometres (30 sq. miles) along the Oreana trend located in west-central Nevada, and is developing gold and silver resources along this emerging trend. In east central Nevada, Rye Patch Gold US Inc. is exploring 66 square kilometres along the prolific Cortez trend near Barrick’s new gold discovery. The Company has established gold and silver resource milestones and time frames in order to build a premier resource development company. For more information about the Company, please visit our website at www.ryepatchgold.com.
On behalf of the Board of Directors
‘William Howald’
William C. (Bill) Howald, CEO & President
For additional information contact:
Rye Patch Gold Corp
info@ryepatchgold.com