the Álamo project - nebula.wsimg.com
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April 2016 Eng. Juan Luis Frias Trevizo
The Álamo Project Ensenada, Baja California North
SUMMARY
The visit from the 28th to the 30th of March, 2016 has the following objectives •Review the area to identify zones favorable to containing free gold and to continue refining with the equipment available at the site (immediately) •Zones favorable to containing mineralization deposits (short term) •Develop an integral exploration program to evaluate the veins and deposits (short to medium term) The El Álamo Mining District is one of the most important gold-bearing mineral deposits in Baja California North, in which prospecting and mining has long been developed, principally for gold but also very important placers, which to date are worked primarily in artisanal form, panning soils and river sediments. The mines only were worked in zones of higher grade and the maximum depth explored in wells, both inclined and vertical, of 20 to 50 meters, but there are mines such as The Princess with developments greater than 100 meters; one of the main reasons for leaving this district was flooding problems due to lack of pumping in mines and the poor conditions of work sites, all work sites, are currently inaccessible. In the areas known as El Álamo and La Biznaga, which include the mining concessions totaling 3000 hectares that is the property of AIVN DE MEXICO SA DE CV, veins of quartz are observed as principal structures, with brownstone anomalies generated by the oxidization of iron mineral that can be associated with broad zones of dispersed mineralization; as well we have mines known as La Princesa and La Aurora where the vein, of irregular thickness between 0.2 and 1.0m, is observed superficially; the gold content, according to reports of CRM 1976 is reported by the majority of the mining works to be on the order of 1 to 200 g/t, in the form of small mineralized inclusions throughout the structure. It is very common to observe the gold in the zones corresponding to the mineralized inclusions that contained a higher concentration of sulfur, those which by way of oxidation and leaching leave cells or box Works in which can be observed free gold. Equipment is currently available at the site (drum and Knelson concentrator with a capacity of 60 tph) to continue gold panning activity that was suspended in 2014 with a production of 500 tpd
El Álamo is located
between the
geographic coordinates
31°36”N latitude and
116°04”W longitude,
with principal access
from the Ensenada -
San Felipe highway,
which intersects a
branch to the SW at 91
Km, which in turn
connects with the town
of El Álamo at 18 Km;
the trip requires an
estimated time of 1.3
hours. The site
includes a landing strip
that is currently
unavailable.
Location and Access
El Álamo
The geologic and structural characteristics of the El Álamo mining district can be considered simple up to a certain point, since the study area is comprised of the granitic batholith of Baja California, by formations whose composition varies from granodiorite to quartz-diorite, from hornblende to biotite, of an age corresponding to the upper Cretaceous; it is common to observe the impact of dikes of different compositions, which are well considered both before and after the veins.
Regional Geology
Capital
Municipal capital
Municipal boundary
Cenozoic, Tertiary,
extrusive igneous
Mesozoic, Cretaceous,
intrusive igneous
Cenozoic, Quaternary, Soil
Mesozoic, Cretaceous,
extrusive igneous
Paleozoic Metamorphic
Mesozoic, Jurassic,
Metamorphic
Mesozoic, Metamorphic
Mesozoic, Cretaceous,
Sedimentary
BAJA CALIFORNIA SOUTH
GULF OF CALIFORNIA
(SEA OF CORTES)
PACIFIC OCEAN
UNITED STATES OF AMERICA
Beaches of
Rosarito
El Álamo
Samples March 2016
Preliminary sampling
Camp and equipment
Areas of interest
Area proposed outside the stream for equipment installation
Shaft with water for gold panning 4 inch pump
Current gold panning area with current equipment (Drum and Knelson)
Area to explore (stream) for panning in 2016 with current equipment a resource of 191250 metric tons is estimated requiring a rectangular 25m sampling totaling 90 samples
Veins NW-SE 40° are the principal system of mineralized structures
Brownstone anomalies to explore as dispersed
La Biznaga zone NW of the project, Areas of Interest
Current gold panning area with current equipment (Drum and Knelson)
Area to explore (stream) for planning in 2016 with current equipment a resource of 81600 metric tons is estimated requiring a rectangular 25m sampling totaling 40 samples
Veins NW-SE 40° are the principal system of mineralized structures
Brownstone anomalies to explore as dispersed
Area 750m long, 75m wide, 2 meters deep and a specific gravity of 1.8 for 202,500 metric tons; to establish the concentration of free gold requires a sampling in pits by excavator with a 25x25 meter grid downstream with a total of 90 samples established
750 m
75 m
Area 500m long, 52m wide, 1.5 meters deep and a specific gravity of 1.8 for 70,200 metric tons; to establish the concentration of free gold requires a sampling in pits by excavator in a 25x25 meter grid in La Biznaga stream, with a total of 40 samples established
500 m
52 m
LA PRINCESA MINE LARGE VEIN ALLUVIAL BANK IN THE STREAM TO PAN MARCH 16
PANNING GOLD IN ARTISANAL FORM, SAN DAVID SHAFT AREA
FREE GOLD IN PAN
DIAMOND BNO IN BIZNAGA AREA COLOR ANOMALY
Equipment Status Comments
Drum 800 tpd unavailable Evaluate repair
Knelson 60 tph unavailable
Evaluate repair 10in mobile conveyor belt 17
meters unavailable
Evaluate repair CAT 345 excavator available
John Deere excavator unavailable
Evaluate repair 988 loader available
CarryDozer John Deere
(equiv d7) available
Sullair Compressor
Generators 100, 135 y 240 kw
Generator
Diesel tank 17000 liters
Lubrication truck
Dump truck 12m3
Submersible pumps 4 in
Submersible pump 6 in
available 3
3 1
available available
available available
available
available
available
KNELSON
DRUM
Economic sensitivity test for panning gold with current equipment
Total 67,345.71 849.70 509.82
Note Based on operating 12 hour shifts 6 days per week 26 days per month, the metallurgical recovery will depend on the concentration of gold to be confirmed by assay, granulometric analysis, continuity of the operation and the condition of the equipment as well as the economic recovery will be a function of the price and net liquidation including point of entry and cost of delivery.
Total 15
T.C 17.50
Cost US$/oz
Expense US$/month Drum Knelson
Diesel 24,660.00 311.14 186.68
Maintenance 20,571.43 259.55 155.73
Labor 14,400.00 181.68 109.01
Food 3,857.14 48.67 29.20
Trailer rental 1,714.29 21.63 12.98
Shipping, other 1,285.71 16.22 9.73
Administration 857.14 10.81 6.49
Personnel Quantity
Operators 5
Mechanics 2
Electricians 2
Assistants 3
Driver and cook 3
Equipment
Drum Knelson
Price Oz Au sales 950 950
Resource tons 272,700 272,700
Tons/day 700 700
Tons/month 18200 18200
Lifetime/years 1.25 1.25
Conc Au gr/tons 0.30 0.30
Recup % 45 65
Oz/day 3.05 4.40
Oz/month 79.26 132.10
Sales US$ 75,295.16 125,491.94
Cost US$/Oz 849.70 509.82
Profit US$/mes 7,949.45 58,146.22
Profit margin % 10.56 46.33
Conclusions ● Excavations in 25 meter grid to obtain samples and assign gold concentration to the resource
estimated at 272,700 metric tons in the Encampment and Biznaga stream, 130 samples in total.
● Semi-detailed mapping of areas of interest both for gold panning and to explore dispersed
deposits from which gold can be recovered by gravimetric concentration requires obtaining 100
samples distributed in the color anomalies mentioned in the area of encampment and Biznaga
● As well as the chemical analysis of the samples, a rated granulometric analysis is required to
improve the operating parameters of both the drum and the Knelson.
● The execution of the sampling and semi-detailed mapping for the areas mentioned requires 12
days. The topographic map of the mining concessions to be elaborated with contours at
minimum every 10 meters. The startup cost of the equipment currently unavailable as well as the
best distribution and location of the equipment to be carried out by a specialist who will be
recommended.
● The maps of mineral concessions assigned to AIVN DE MEXICO are required immediately, and to
know who surrounds these concessions or if they are free and we determine which are of interest
to immediately claim.
● To obtain the permission of the owners of lands where we are going to work in the areas of
interest mentioned, both for gold panning and for exploration of dispersed deposits.
● To investigate the permits before SEMARNAT (Secretary of the Environment and Natural
Resources) to obtain information on the streams, if you think it necessary.
● It is important to put the Knelson concentrator in operation since the coarse gold in the feed is
that which produces a good recovery
● A lower counterpressure of water generates a better recovery; its reduction permits the
concentration of finer gold particles given the lower force of the water current
● The water provided by the San David shaft section 2x2.5 meters and 90 meters deep is located at
650 meters from the encampment and requires gauging to determine if it is sufficient for the
process which requires a minimum of 17 m3/hour of clean water, 204 m3 in the 12 hours of daily
operation.
● The granulometry of the material and/or mineral feed is the most important variable (rated
granulometric analysis)
Conclusions ● The economic sensitivity analysis of gold panning - the best results are with the Knelson controlling
the variables such as granulometry, constant feed and counterpressure of water; the concentration
of 0.30 gr/ton in this analysis is information estimated by Eduardo Baoullosa and would require
determination of the sale price per ounce.
● The increment in the margin of the Knelson vs. the drum is the recovery; 65% vs 45% respectively
The estimated total cost of the work described for a second visit of the project is US$ 11,760,
59% of which are the analysis of the 230 samples shown in table 1.
TABLE 1
Total 11760
José García Juan Luis Frias T.
Víctor Frias T.
The chemicals analyzed in Chemex are Au by absorption (AA23) and Ag + 35 elements by plasma (ICP41)
Activity Responsible Execution time Unit cost/US$
Total
Mining concession map JG Immediate
Topographic map contours 10 meters JG Immediate
Permits landowners areas of interest JG Immediate
Sampling of the areas for gold panning 130 samples (Chemex Laboratory)
JLFT 4 days 30 3900
Sampling of the areas for exploration of dispersed deposits 100 samples (Chemex Laboratory) optional in this visit, recommended to take advantage of the trip and to expand the zones suitable for panning gold
JLFT 30 3000
Granulometric analysis and gravimetric concentration tests, laboratory in Chihuahua
JLFT 350 350
Sampling fees JLFT 4 days 150 600
Semi-detailed mapping fees JLFT 8 days 150 1200
Vehicle rental JLFT 12 days 40 480
Excavation of pits (Diesel and Operator) JLFT 2 days 350 350
Airline ticket Chihuahua-Tijuana JLFT 410 410
Hotel Ensenada JLFT 30 360
Gasoline JLFT 300 300
Food JLFT 200 200
Evaluation of the rehabilitation of equipment; a person will be recommended
JLFT, VFT 2 days 100 200
Airline ticket Chihuahua-Tijuana 410 410