La Curva Project July, 2016 - Mirasol Resources...
Transcript of La Curva Project July, 2016 - Mirasol Resources...
Focused on Gold and Silver Discovery in the Americas
La Curva ProjectMay, 2017
Mirasol Resources Ltd.910-850 West Hastings StreetVancouver, BCCanada V6C 1E1(604) 602-9989www.mirasolresources.comTSXV - MRZ
For further information contact:Stephen Nano President and [email protected]
Focused on Gold and Silver Discovery in the Americas
Cautionary Statement
This presentation contains certain statements that may be deemed “forward-looking statements”. All statements in this presentation, other than statements of historical fact, that address futureoperations, resource potential, exploration drilling, exploitation activities and events or developments that the Company expects to occur, are forward looking statements. Forward looking statements arestatements that are not historical facts and are generally, but not always, identified by the words “expects”, “plans” “anticipates”, “believes”, “intends”, “estimates”, “projects”, “potential” and similarexpressions, or that events or conditions “will”, “would”, “may”, “could” or “should” occur. Information inferred from the interpretation of drilling results and information concerning mineral resourceestimates may also be deemed to be forward looking statements, as it constitutes a prediction of what might be found to be present when and if a project is actually developed. Although the Companybelieves the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results may differmaterially from those in the forward-looking statements. Factors that could cause the actual results to differ materially from those in forward-looking statements include market prices, exploitation andexploration successes, and continued availability of capital and financing, and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees offuture performance and actual results or developments may differ materially from those projected in the forward-looking statements. Forward looking statements are based on the beliefs, estimates andopinions of the Company’s management on the date the statements are made. The Company undertakes no obligation to update these forward-looking statements in the event that management’s beliefs,estimates or opinions, or other factors, should change, except as may be required by applicable law.
This presentation may use the term “indicated resource”. The Company advises investors that although this term is recognized and required by Canadian securities regulations (under National Instrument43-101 “Standards of Disclosure for Mineral Projects”), however the US Securities and Exchange Commission does not recognize this term. Investors are cautioned not to assume that any part of or all of themineral deposits in these categories will ever be converted into reserves.
Stephen Nano, President and CEO for the Company and a “Qualified Person” under National Instrument 43-101, has reviewed and approved the scientific and technical information in this presentation.
MIRASOL RESOURCES
Focused on Gold and Silver Discovery in the Americas
Santa Cruz Gold – Silver Portfolio: La Curva OceanaGold JV
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• Mirasol Resources has a large portfolio of high quality, 100% owned, drill ready gold - silver projects in Santa Cruz province, Argentina
• La Curva gold - silver project Joint Ventured to OceanaGold 18th May 2017
• Targeting high grade, low sulphidation epithermal gold - silver mineralization
• Compelling drill ready targets defined at La Curva prospects, Cerro Chato, Lomo Arthur and Southwest
• First year OceanaGold JV commitment of US$ 1.25M in exploration spend, including 3,000 meters of drilling
Santa Cruz province, Jurassic age volcanic terrain
• World class high grade gold - silver epithermal district
• Four operating large scale gold - silver mines and additional new mine development
Focused on Gold and Silver Discovery in the Americas
La Curva – Gold - Silver Project Overview
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References1 Extorre Gold Mines Ltd.
News Release Feb 22, 20112 Mariana Resources Ltd.
News Release Jul 11, 20113 Dark Horse Resources
News Release Nov 22 2016
MRZ La CurvaProperty
36,100 ha
Los Domos3
La Punta Target Falcon1 Au-Ag Project
53m @ 1.12 g/t Au& 30g/t Ag
Las Calandrias 2
Au-Ag Project0.4 Moz Au & 6.77 Moz Ag
(Ind. & Inf. Resource)
SouthWest
Cerro Chato
Loma Arthur
Base Imagery: ESRI WorldImage Satellite Image
Curva West
OutcroppingGranite Block
Base Imagery Ground Magnetics (RTP)
Inset
La Curva
Max Au 20.73 g/tMax Ag 153.6 g/t
Curva West
Max Au 6.17 g/tMax Ag 33.9 g/t
SouthWest
Max Au 66.8 g/tMax Ag 35.5 g/t
Loma Arthur
Max Au 10.76 g/tMax Ag 24.05 g/t
Cerro Chato
P r e p a r e d b y :
P r e p a r e d f o r :
*Gold Equivalent = Gold + Silver / 60
• 36,100 hectares of mineral exploration claims
• Low altitude setting, favourable infrastructure with a sealed highway and gas pipeline traversing the project
• Mirasol discovery – no previous drilling
• Widespread evidence of gold –silver mineralization confirmed
• Drill ready targets defined: Cerro Chato, Lomo Arthur and Southwest along 6 km long La Castora Gold Trend
• Additional prospects identified in La Curva West that require further exploration to identify new drill targets
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La Curva Gold – Silver Project: Geological Setting
Permian sandstone Basement block
Buried granite or Rhyolite dome
Outcrop Permian hornfels block
Triassic granite blockbasement
Extensive rhyolite dome dyke field
Gravel covered basement block contact
• Prospective geology – Horst and Graben extensional setting for Jurassic age volcanism and mineralization • Mineralization associated with rhyolite to dacite volcanic domes and dykes, hosted within La Matilda epiclastic
sediments and Chon Aike ignimbrite sequence • Gold - silver mineralization in low sulphidation epithermal veins, sheeted veinlets and breccias, with multiple
rock chip assays in the 5.0 to 66.8 g/t Au range.
Gravel covered Jurassic volcanics
Gravel covered Jurassic volcanics
Gravel covered Jurassic volcanics
Southwest
Loma Arthur
Cerro Chato
Curva West
Base Imagery: Ground Magnetics (RTP)
Structural Interpretation RTP Magnetics
Minor Regional Structure
Major Regional Structure
Interpreted Block Boundary
Inset
La Curva
Vein floats
Hydrothermal Breccia
Tectonic Breccia
Polylithic Breccia
Jurassic Volcanic & Sub-volcanic
Matilde
Chon Aike
Bajo Pobre?
Basement
Laminated/Massive Tuff & fine ash tuffs
Intr
usiv
e U
nits
Rhyo
litic
Uni
ts
Silica deposits (sinters)
Devitrified rhyolitic ignimbritesGraded units (Politic conglomerates to sandstones)Epiclastic politic breccias (distal facies)Epiclastic politic breccias(proximal facies)Acid dikes/sills/flow
Intermediate dikes/flowsBrecciated ignimbrites with glassy rhyolitic clastsBrecciated tuffs with flow banded clasts
Lapillitic rhyolite ignimbrites
Rhyolite dome facies
Glass shards rich welded tuffs
Obsidian rich ignimbritesWelded pumice-lithic rich ignimbrites/tuffsLithic-crystal lapillitic tuffs (magnetic clasts)Crystal rich tuffs/ignimbrites
Granite (La Leon Fm)Permian Quartz Sandstones (Juanita Fm?)
Intermediate lithic-crystal coarse tuffs (non-welded)Andesitic polilitic breccias
Legend
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Focused on Gold and Silver Discovery in the Americas
Resistivity (ohm-m)Max850
Chargeability (mV/V)Max 55
3D Resistivity Contour Thickness (m)
Contour Thickness of the 3D Resistivity Anomaly
December 2016 Rock Chip Sampling
IP Resistivity : Depth Slice - 50m
Outline of Cerro ChatoSilica Cap
IP Chargeability : Depth Slice - 50m
Large chargeable anomaly up to55 mV/V coincident with areasof high resistivity
Large resistivity anomaly, up to 850 Ohm-m semi-coincident with the Cerro Chato silica cap
December 2016 rock chip sampling to 10.76 g/t Au and 24.05 g/t Ag
3D resistivity thickness model. Thickest area of model (in red) at +100 Ohm-mHighlights sigmoidal shape resistivity anomaly
Au g/t Ag g/tMax 10.76 24.05Min <0.01 <2
Average 0.85 1.9
Au Assays % of samples Au g/t69 Samples 29.7% > 0.541 Samples 17.7% > 1.022 Samples 9.5% > 2.011 Samples 4.7% > 5.01 Sample 0.4% > 10.0
Ag Assays % of samples Ag g/t84 Samples 36.2% > 2.051 Samples 22.0% > 3.029 Samples 12.5% > 5.016 Samples 6.9% > 10.08 Samples 3.4% > 15.0
Cerro ChatoGold - Silver Rock Chip Assays
Total samples = 232
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La Curva – Cerro Chato Prospect, Targeting
• Large silica cap crosscut by 300m long zone of sheeted epithermal veinlets
• Rock chip assays up to 10.76 g/t Au and 24.05 g/t Ag
• Extensive, coincident IP resistivity and IP chargeability anomalies underlie silica cap
• Compelling drill target for bulk mineable gold-silver mineralization
Focused on Gold and Silver Discovery in the Americas
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La Curva – Cerro Chato Prospect, Cross Section Model
Chargeability +10 mV/V
Conductive layer — Clay cap?
Resistivity +200 Ohm m
250m
Cross Section 49,230E : Exploration Target from 3D Geophysical Model
Chargeable body 750mResistive body 500m
Upwardly flaring, funnel shaped resistivity anomaly. Conceptual stockwork and feeder zone drill target
Resistivity +100
Ohm-m
Chargeability +20 mV/V
P r e p a r e d b y :
P r e p a r e d f o r :
250m
0m
10.76 g/t Au and 24.05 g/t Ag outcropping / sub-cropping veinlets projected onto
section
Sigmoidal shaped resistivity anomaly, spatially coincident with gold-silver veinlets
Label:
Gold g/t /Silver g/t
IP Resistivity ModelThickness Contours
Contour 120 m
Contour 90 m
Contour 80 m
Geophysical Sections
Rock Chip AssaysGold g/t
2 to 10.80.5 to 20.1 to 0.50.05 to 0.10.01 to 0.050 to 0.01Below Detection
Colloform banded epithermal veinlet cross cutting the Cerro Chato silica cap Assay results up to 10.76 g/t Au and 24 g/t Ag
Cerro Chato silica cap, formed from Silica –clay altered laminated (waterlain?) volcanic ash. Not mineralized
• The Cerro Chato silica cap is composed of barren strongly silicified, laminated volcanic ash.
• December 2016 prospecting outlined a 300 m by 55 m zone of east-northeast oriented colloformbanded epithermal veinlets. The veinlets are up to 20 cm wide, form three veinlet trends and have returned assays up to 10.76 g/t Au and 24 g/t Ag.
• The veinlet trends overlie a large sigmodal shaped resistivity anomaly and may represent “geochemical leakage” from a concealed mineralized zone underlying the silica cap.
A priority target for drill testing
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La Curva – Loma Arthur Prospect
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Outline of Buried Magnetic Anomaly
Gravel Cover
Outline of Resistive Anomalies from Pole Di-pole Electrical Geophysics
40 Ohm-m
100 Ohm m
200 m
Gravel Cover
Gravel Cover
Base Imagery: Ground Magnetics (RTP)
Labelled Rock Chip Assays
Gold (g/t) / Silver (g/t)66.8/20.2
Rock Chip Assays by Gold Equivalent* (g/t)
0.0 to 0.015 0.1 to 0.5
0.05 to 0.1
0.015 to 0.05
Below Detection
1 to 67.2
0.5 to 1
*Gold Equivalent = Gold + Silver / 60
66.8/20.237.61/7.4
22.08/2.117.25/4.1
Au g/t Ag g/tMax 66.8 35.5Min 0.008 <0.5
Average 4.85 2.15Au Assays % of samples Au g/t
67 Samples 67% > 0.553 Samples 53% > 1.035 Samples 35% > 2.021 Samples 21% > 5.014 Samples 14% > 10.0
Loma Arthur Gold - Silver Rock Chip Assays
Total samples = 100
Ag Assays % of samples Ag g/t26 Samples 26.0% > 2.016 Samples 16.0% > 3.011 Samples 11.0% > 5.04 Samples 4.0% > 10.02 Samples 2.0% > 15.0
2.23/1.9
Gravel Cover
Gravel Cover
• 400 meter diameter hill of altered volcanics, surrounded by thin gravel cover
• Multiple epithermal vein trends traverse the hill
• Rock chip samples of sub-meter wide veins assayed up to 66.8 g/t Au and 35.5 g/t Ag
• 1 km diameter, gravel covered magnetic anomaly may represent covered volcanic dome
Priority drill target for high grade gold mineralization on the margin of buried volcanic dome
Focused on Gold and Silver Discovery in the Americas
La Curva – Loma Arthur Prospect
50 m
66.8/20.237.61/7.4
54.4/9
46.9/6.3
22.08/2.1
17.25/1.7
16.95/4.1
15.6/7.4
14.6/10.9
12.56/1.8
10.32/7.9
100 Ohm m
40 Ohm-m
Base Imagery: Ground Magnetics (RTP)
Labelled Rock Chip Assays
Gold (g/t) / Silver (g/t)66.8/20.2
Rock Chip Assays by Gold Equivalent* (g/t)
0.0 to 0.015
0.1 to 0.50.05 to 0.1
0.015 to 0.05
Below Detection
1 to 67.2
0.5 to 1
*Gold Equivalent = Gold + Silver / 60
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• Widespread, high grade gold-silver mineralization in sub-meter wide epithermal vein trends
• Classic low sulphidation veining with colloformbanded and bladed lattice texture
• Petrology shows veins composed of quartz-adularia with native gold and electrum
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La Curva – Southwest Prospect
1.03/9.8
5.33/ 12.9
1.37/ 13.7
5.97/ 6.55.11/ 5.9
Gradient Array Resistivity RTP Magnetics
Gradient ArrayInterpretation
Transition BoundaryOutcropping Vein
Mineralized Zone
Magnetic Interpretation
Magnetic Low Zone
Deflation Zone
Gradient Array (Resistivity)
Structural Interpretation RTP Magnetics
Minor Regional Structure
Major Regional Structure
Interpreted Block Boundary StronglyResistivity
StronglyConductive
Ohm-m
GroundMagnetics (RTP)
Strong Weak
nT
Rock Chip AssaysAuEq60 (g/t)*
1.00 to 6.31
0.50 to 1.000.25 to 0.500.10 to 0.25
Labelled RockChip Assays
5.33/12.9
* Gold Equivalent = Gold + Silver / 60
0.0 to 0.015
0.015 to 0.05
Below Detection
SouthwestGold - Silver Rock Chip Assays
Total samples = 214
Au g/t Ag g/tMax 6.17 33.9Min <0.01 <0.5
Average 0.38 2.67
Au Assays % of samples Au g/t37 Samples 17.3% > 0.520 Samples 9.3% > 1.010 Samples 4.7% > 2.03 Samples 1.4% > 5.00 Samples 0.0% > 10.0
Ag Assays % of samples Ag g/t37 Samples 29.0% > 2.020 Samples 25.2% > 3.010 Samples 16.4% > 5.03 Samples 7.9% > 10.08 Samples 3.7% > 15.0
Gold (g/t) / Silver (g/t)
1.3 km long zone of narrow veinletsAssays to 6.17 g/t Au and 33.9 g/t Ag
• 1.3 km long zone of subcropping and outcropping epithermal veinlets with selective rock chip assays to 6.17 g/t Au and 33.9 g/t Ag• Hosted by silicified rhyolite-ignimbrite and epiclastic sediments • Gradient array, electrical geophysics and ground magnetics show prospective structural setting localized over the buried structural edge of basement horst
block and volcanic graben.
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A r g i l l i c - S i l i c i f i e d E p i c l a s t i c U n i t s
L e s s S i l i c i f i e d T u f f s
P e r m i a n B a s e m e n t ?
Interpreted Fault
S t r o n g S i l i c i f i e d T u f f s
F e e d e r Z o n e
Outcropping Normal Fault
5.33 g/t Au 1.10 g/t Au 0.63 g/t Au
R e s i s t i v e Z o n e ( 1 5 0 o h m m )
C h a r g e a b l e R e s i s t i v e Z o n e ( 9 m s e c )PDP Line 49300E
Chargeabil ity - PDP Line 49300E
Resistivity - PDP Line 49300E
A r g i l l i c - S i l i c i f i e d E p i c l a s t i c U n i t s
L e s s S i l i c i f i e d T u f f s
P e r m i a n B a s e m e n t ?
L e s s S i l i c i f i e d T u f f s
P e r m i a n B a s e m e n t ?
A r g i l l i c - S i l i c i f i e d E p i c l a s t i c U n i t s
S t r o n g S i l i c i f i e d T u f f s
S t r o n g S i l i c i f i e d T u f f s
Interpreted Fault Outcropping Normal Fault
Interpreted Fault Outcropping Normal Fault
5.33 g/t Au 1.10 g/t Au 0.63 g/t Au
5.33 g/t Au 1.10 g/t Au 0.63 g/t Au
F e e d e r Z o n e
F e e d e r Z o n e
La Curva: Southwest Pole Dipole L49300E Section Model
Ohm-m
2 450
msec
1.3 11.4
100 m
100 m
100 m
100 m
11
100 m
100 m
• IP geophysics shows coincident funnel shaped resistivity and chargeability anomalies
• Centered over buried fault zone that marks contact of basement horst block and volcanic graben
• Epithermal veinlets sampled at surface may represent “leakage” from larger mineralized zone at depth, as suggested by IP anomalies
Priority target for drill testing
Focused on Gold and Silver Discovery in the Americas
Same structure as previous photo, banded chalcedonic silica veinlet (with adularia) in silicified
crystal tuffs, assays to 3.10 g/t Au
Crystal tuffs with banded chalcedonic silica veinlets with up to 15 cm thick, assays to 5.33 g/t Au
Parallel epithermal veinlets up to 10 cm wide (sheeted veins) crosscutting silicified rhyolitic tuff,
Select rock chip samples assayed up to 5.33 g/t Au
La Curva: Southwest Prospect Mineralization
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Focused on Gold and Silver Discovery in the Americas
La Curva: Curva West Prospect – Ground Magnetics and Rock Chip Assays
AS Magnetics Image with Interpreted Structures
1.43/8.51.72/15.31.28/6.4
1.93/153.6
Target 2:
Target 11.44/30.61.39/8.5
Target 51.67/0.9
Labelled Rock Chip Assays
Gold (g/t) Silver (g/t)
5.33/12.9
Rock Chip AssaysGold Equivalent g/t
*Gold Equivalent = Gold + Silver / 60
1 to 67.10.5 to 10.25 to 0.50.1 to 0.250.01 to 0.10 to 0.01Below detection
1000 m
Structural Interpretation RTP Magnetics
Minor Regional Structure
Major Regional Structure
Interpreted Block Boundary
Corridor of higher gradeepithermal vein blocks
concentrated along buried fault margin of volcanic basin
Target 320.73/18
15.22/36.414.25/26.6
2.92/8.9
Target 412.9.62.4
1.43/24.7
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• Similar geological setting to La Castora Gold Trend
• Combination of geological mapping and detailed ground magnetics shows partially outcropping granite basement fault block and Jurassic age volcanic basin
• Large blocks of low sulphidation epithermal veins and breccias hosted within the Jurassic age epiclastic sediments
• Rock chip samples of mineralized blocks return assays of up to 20.7 g/t Au and 18 g/t Ag
• Mineralized blocks are angular and cluster together adjacent to rhyolite flow dome margins or overlie the buried fault controlled volcanic basin margin, suggesting they are close to the source area of the mineralization
Further exploration required to define drill targets for high grade epithermal gold-silver mineralization
Grayscale RTP walk magnetics
Focused on Gold and Silver Discovery in the Americas
La Curva: Curva West Prospect – Geology and Exploration Model
• Fault controlled Triassic age granite basement block (Horst) with Jurassic age volcanic basin (Graben)
• Eroded blocks of high grade epithermal mineralization within epiclastic sediment overlying Jurassic volcanics
• Blocks of epithermal mineralization up to 5 meters in size, cluster around volcanic rhyolitic flow dome margins and overlying buried Horst block margin
• The large size and angular shape of mineralized blocks suggests they are close to their source area of mineralization
Prospective setting for concealed high grade gold-silver mineralization
Labelled Assays
Gold (g/t) / Silver (g/t)
Rock Chip AssaysGold Equivalent g/t
*Gold Equivalent = Gold + Silver / 60
1 to 67.10.5 to 10.25 to 0.50.1 to 0.250.01 to 0.10 to 0.01Below detection
B
A
T4 - Large block of volcanic wall rock in epiclastic with colloform veinlet
12.9 g/t Au, 64.2 g/t AgT3 – Fine saccharoidal to Chalcedonic
14.25 – 20.73 g/t Au vein
Target 2
Target 11.44/30.61.39/8.5
Target 51.67/0.9
1.43/24.7
Target 3
Target 412.9.62.4
2.92/8.9
1.43/8.5
1.72/15.31.28/6.4
1.93/153.6
20.73/1815.22/36.414.25/26.6
1.67/0.9
T2 – colloform saccharoidal & grey pyritic chalcedonic veins 1.93 g/t Au, 153.6 g/t Ag
T2 - Concentration of angular mineralized blocks near granite contact - 1.72 g/t Au,
15.3 g/t Ag
1000 m
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T r i a s s i c g r a n i t e h o r s t b l o c k
J u r a s s i cC h o n A i k e V o l c a n i c
g r a b e n
E r o d e d b l o c k s o fM i n e r a l i z a t i o n i n e p i c l a s t i cs e d i m e n t , s o u r c e f o r T 1 / T 2
A r g i l l i ca l t e r a t i o n
h a l o
A r g i l l i c a l t e r a t i o no f e p i c l a s t i c
m a t r i x
C o n c e p t u a l t a r g e t , m i n e r a l i z a t i o n
P o o l e d b e n e a t h v o l c a n i c f l o w
d o m e
M i n e r a l i z e d b l o c k s ,
S o u r c e f o r T 3 g o l d a n o m a l i e s
C o n c e p t u a l t a r g e tE p i t h e r m a l
m i n e r a l i z a t i o n h o s t e d b y g r o w t h f a u l t s
500 m