Filing of NI 43-101 Technical Report on Colombian Anzá Project
January 10 2019 - 9:58AM
Business Wire
Orosur Mining Inc. (“Orosur” or “the Company”) (TSX: OMI) (AIM:
OMI) has filed a technical report prepared by Andes GMS SPA in
accordance with National Instrument 43-101 Standards for Mineral
Projects ("NI 43-101") on the Anzá gold exploration project
(“Anzá”) in Colombia (the "Report"). To view the full report,
please visit www.orosur.ca/operations/technical-reports.
Anzá is an advanced exploration project and the Report includes
a review of the regional geology, local geology, types and degree
of the mineralization, exploration history, metallurgical testing
and drilling results and represents an update from the technical
report prepared in May 2010 by Bargmann & Platten of Snowden
Mining Industry Consultants.
OVERVIEW
- Total project area of 105 km² (10,615
hectares) located 50km west of Medellin, Colombia with access via
predominantly paved roads with a shorter gravel road leading
immediately into the project area. The site has existing
infrastructure including water, power, roads and a camp.
- 100% owned with no option fees or
commitments, and includes existing environmental and mining permits
relating to two gypsum mines located on the property and mined
since 1991 by a thrid party.
- Located on the eastern side of the
Cordillera Occidental of Colombia in the Metallogenic Belt of the
Middle Cauca, which mainly hosts two types of gold mineralization:
a porphyry style and/or an epithermal type with a strong
relationship with the Cauca-Romeral fault zone, which constitutes a
suture zone associated with the collision of the Choco Volcanic
Arc. The most important gold mining districts of the country are
located in this region.
- Magnetometry, induced polarization,
radiometry, soil and rock sampling surveys have all been completed
leading to the identification of 5 initial targets within the
property: APTA, Charrascala, Guaimarala, Jesuitas and La Cejita.
APTA has been drilled and initial drilling has been conducted at
Charrascala.
- Initial metallurgical and rock density
test work completed in mid-2016 provided average gold recoveries
ranging from 95.9% – 96.1% utilising a combination of gravity
concentration, flotation and cyanidation processing, which is
comparable to the metallurgical recoveries of the development
projects and producing mines in the region.
- Historic diamond drilling of 17,409m
consisting of 53 holes was completed during 2011 to 2012 by Waymar
Resources, a company and assets acquired by Orosur in
mid-2014.
- This drilling confirmed that gold and
sulphide mineralization are associated with a structurally
controlled hydrothermal system (fault and breccia zones). Drilling
also identified three units as carriers of gold mineralization:
silicified matrix- supported breccia with pyrite / sphalerite /
chalcopyrite disseminated in the matrix and veins; fault zones with
similar sulphides; and laminated mudstone or tuff cut by
quartz-sulphide veins.
- Notable interscepts from the 2011 to
2012 drill campaign include:
Hole From To
Intercept Au Ag Zn
# m m m
g/t g/t % MAP‐11
213.0 219.0 6.0
18.26 1.95
0.35 including 217.5 219.0 1.5
72.30 6.90 0.93
MAP‐20 145.0 186.0 41.0
3.85 1.39 1.25 including 171.3 177.0
5.7
19.84 3.94 1.66
MAP‐21 224.0
242.0 18.0
14.14 2.05 2.83 including 225.0 229.4 4.4
45.62 5.47 10.59 252.0 253.0 1.0
10.85 1.80 0.67
MAP‐29 183.0
194.9 11.9
10.57 2.40 1.61 including 185.0
187.0 2.1
40.25 4.85 4.64
MAP‐33 157.1 179.5 22.4
10.42 1.87 1.56 including
165.0 170.8 5.8
29.49
3.37 2.81
MAP‐36 198.6 227.5 28.9
3.88 1.68
0.43 including 205.5 217.5 12.0
8.83 2.65 0.59
MAP‐38 123.4 124.5 1.1
15.40 3.60 1.94 172.0 212.5 40.5
14.09 3.82 1.95
including 179.5 186.0 6.5
70.99 6.34 0.12 including 184.6
186.0 1.4
176.00 15.20 0.39 including 202.0
205.4 3.4
20.89 9.71 4.75
MAP‐43 65.5 68.6 3.1
7.66 73.04 0.68 167.5 231.5 64.0
1.88 1.88 0.70 including 209.0 214.0
5.0
9.07 3.40 0.70
MAP‐47 105.0
118.3 13.3
2.24 316.25 1.00 including 106.0
110.5 4.5
4.69 768.89 2.34
MAP‐48 181.0 195.7 14.7
40.37 9.30 3.41 including
185.5 195.7 10.2
58.03 13.16 4.85 including 187.6
189.5 1.9
219.00 29.50
6.55
- Orosur commenced its own diamond
drilling programme in late 2017
- Orosur completed 18 diamond drill holes
totalling 6,314m at the APTA target, improving and validating the
geological model. Drilling extended the mineralized zone a further
95m down dip, to a total depth of 400m.
- Drilling to date has encountered a
number of notable intercepts over 20 g/t Au, including:
Hole From To
Intercept Au Ag Zn
# m m m
g/t g/t % MAP_11
217.5 219.0
1.5
72.30 6.90 0.93
MAP_20 172.3 175.5 3.2 22.28
4.55 1.98 Including 172.3 174.0
1.7 32.60 5.50 1.82
MAP_21 225.0
231.6 6.6 35.24 5.00 6.97
Including 226.3 228.0 1.7 61.40 8.20 4.03 Including 228.0
229.4 1.4 51.50 5.10 1.80
MAP_28 220.5 221.7 1.2 29.20
8.10 0.58
MAP_29 185.0 187.0
2.0 40.25 4.85 4.64 Including
186.0 187.0 1.0 54.20 6.00 3.03
MAP_33 166.5 170.8 4.3 37.09
3.99 2.93 Including 167.5 169.0
1.5 79.90 7.70 3.15
MAP_36 213.2
214.5 1.3 23.00 4.40 0.63
MAP_38 179.5 186.0 6.5 70.99
6.34 0.12 Including 181.0 182.5 1.5 99.90 7.50 0.03
Including 184.6 186.0 1.4 176.00 15.20 0.39
202.0
205.4 3.4 20.89 9.71 4.75
Including 203.5 204.5 1.0 28.30
12.50 5.85
MAP_48 187.6 194.0
6.4 91.62 20.28 7.52 Including 187.6
189.5 1.9 219.00 29.50 6.55 Including 190.5 191.5
1.0 89.10 15.20 16.25
MAP_51
201.6 203.3 1.7 37.00 5.40 13.80 303.5 305.0
1.5 22.90 8.40 6.06
MAP_054
145.7 148.9 3.2 24.92 1.40
2.40 Including 145.7 146.7 1.0
37.96 1.30 0.70
MAP_062 237.7
238.50 0.80 25.84 7.40 0.07
MAP_070 183.0 184.0 1.0 23.66 3.60 0.04
257.0
259.0 2.0 22.04 4.65 4.23
Including 257.0 258.0 1.0 28.93 5.30 3.59
- As part of this programme 5 holes,
comprising 3,045m of diamond drilling, were completed at
Charrascala, which tested the strong gold soil geochemical
anomalies along an 800m north-south corridor. Drilling results
included intersections of 3.43 g/t Au and 30.60 g/t Ag over 1.5m,
and 2.62 g/t Au and 14.30 g/t Ag over 0.90m;
- Exploration Agreement in place with
Newmont Mining announced in late 2018.
Qualified Person
The Report has been prepared by or under the supervision of
independent geologist Mauricio Rubio (AusIMM), a Qualified Person
under NI 43-101.
Andes GMS SPA have conducted a site visit allowing it to audit
the Company’s field procedures, sample handling and preparation
techniques, analytical procedures, results and Quality Assessment /
Quality Control (“QAQC”) systems (check assaying) that it
implements. Andes confirms that Orosur has undertaken its
exploration programmes using industry best practices.
About Orosur Mining Inc.
Orosur Mining Inc. (TSX: OMI; AIM: OMI) is a precious metals
developer and explorer focused on identifying and advancing gold
projects in South America. The Company operates in Colombia and
Uruguay.
The information contained within this announcement is deemed by
the Company to constitute inside information as stipulated under
the Market Abuse Regulation ("MAR"). Upon the publication of this
announcement via Regulatory Information Service, this inside
information is now considered to be in the public domain. If you
have any queries on this, then please contact Ryan Cohen, VP
Corporate Development and Interim CFO of the Company (responsible
for arranging release of this announcement on behalf of the
Company) on: +1 (778) 373-0100.
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version on businesswire.com: https://www.businesswire.com/news/home/20190110005486/en/
Orosur Mining IncIgnacio Salazar, Chief Executive
OfficerRyan Cohen, VP Corporate Development & Interim
CFOinfo@orosur.caTel: +1 (778) 373-0100
Cantor Fitzgerald Europe – Nomad & Joint BrokerDavid
Porter/Keith DowsingTel: +44 (0) 20 7894 7000
Numis Securities Limited – Joint BrokerJohn Prior / James
Black / Paul GillamTel: +44 (0) 20 7260 1000
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