TRISTAR GOLD CONTINUES TO EXPAND RESOURCES AT CASTELO DE SONHOS (Scottsdale, AZ), TriStar Gold Inc. (the “Company” or “ TriStar”) has completed an updated mineral resource estimate for the Castelo de Sonhos gold project using all available data, including assays from the
December 4, 2017 Trading Symbol: TSG - TSX.V
TRISTAR GOLD CONTINUES TO EXPAND RESOURCES AT CASTELO DE SONHOS
(Scottsdale, AZ), TriStar Gold Inc. (the “Company” or “ TriStar”) has completed an updated mineral
resource estimate for the Castelo de Sonhos gold project using all available data, including assays from the
37 drill holes that were not available for the September 18, 2017 resource estimation. Key highlights are:
o Mineral resource (0.4 g/t cut-off) of
Indicated
• 8.9 million tonnes,
• at 1.8 g/t,
• containing 0.5 million ounces of gold
Inferred
• 26.3 million tonnes,
• at 1.2 g/t,
• containing 1.0 million ounces of gold
o Substantial amounts of Esperança Central and South still untested
o Esperança East and West will be drill tested in 2018
“The resource is growing as anticipated and continues to validate the predictions of the exploration target
range. We look forward to drilling in 2018 aimed at further expanding the resource and supplying all the
data necessary for the scoping study” says Nick Appleyard, TriStar’s President and CEO, “CDS continues
to deliver and the resource has grown by over 400% in the last 18 months, and now our confidence levels
are growing as well . We are particularly pleased with the strong grade of the Indicated resources, at 1.8
g/t, which is due to our ability to use petrophysics and televiewer to identify marker horizons that establish
continuity between our 50m drill holes.”
Table 1. Mineral resource estimate 1 for the Castelo de Sonhos gold project ( with an effec tive date of
December 4, 2017) above a reporting cutoff 2 of 0.4 g/t Au.
Region
Resource Category
Tonnage
(Mt)
Grade
(g/t Au)
Metal Content3
(Moz Au)
Esperança South
Indicated
Inferred
8.9
14.9
1.8
1.2
0.5
0.6
Esperança Center
Indicated 0 0 0
Inferred 11.3 1.0 0.4
Project Total Indicated 8.9 1.8 0.5
Inferred 26.2 1.2 1.0
1Numbers have been rounded to reflect the precision of Inferred and Indicated mineral resource
estimates.
2The reporting cutoff corresponds to the approximate marginal cutoff for an open pit with total
operating cost (non-waste mining + processing + G&A) of $US 15.00/t, metallurgical recovery of 98%
and a gold price of $US 1,200/oz. These are mineral resources and not reserves and as such do not
have demonstrated economic viability.
3The metal content estimates reflect gold in situ, and do not include factors such as external dilution,
mining losses and process recovery losses.
4TriStar is not aware of any environmental, permitting, legal, title, taxation, socio-economic, marketing
or political factors that might materially affect these mineral resource estimates.
5TriStar intends to file a new NI 43-101 Technical report within 45 days in support of this new mineral
resource estimate.
Resource estimation method
The resource is constrained by a mineralized envelope that corresponds to the conglomeratic band of the
paleo-placer, honouring its outcrop location and surface measurements of its bedding orientations , and
extending into the upper arenite where drilling has confirmed that the base of th e upper arenite contains
remobilized gold. All drill hole assays were capped at 20 g/t.
This resource update was done using inverse-distance-cubed (ID3) interpolation of grades from drill holes
into 5x5x2m blocks. The search strategy, guided by variogram analysis, uses a flattened ellipse, with ranges
of 100m in the bedding direction and 10m perpendicular to bedding. Heavy mineral bands in optical
televiewer (OTV) images were used to establish local bedding orientations. Grade estimation was
performed separately within each of three major stratigraphic units that comprise the conglomerate band,
and within two more strongly mineralized reefs that occur at the boundaries between these units. Assay
data, lithology logs and petrophysical signatures were used to identify marker horizons at the boundaries
of these units. The reefs that occur at the boundaries between the three major units are 10 -20m thick and
appear to be very continuous.
As with the previous resource model, this new resource estimate was checked a gainst the grade-tonnage
distribution predicted by a global change of support procedure, assuming 5x5x2m selective mining units.
The grade, tonnage and metal content predicted by this global procedure are all within 10% of the values
reported from the ID3 block model, which has the advantage of providing local detail that enables checking
of the modeling of marker horizons and continuity directions.
Resource classification
The mineral resources have been reported from inside a pit shell using parameters of $1,500 gold, 98%
metallurgical recovery, 55-degree pit slopes and operating costs of process $10/t, G&A $1.50/t and contract
mining at $3/t. Within the pit shell material above a cut -off grade of 0.4 g/t was classified as Indicated
resources in areas wit h 50m drilling, where at least three separate drill holes are available for grade
estimation, the closest of which is within half the range of the variogram. Areas with 100m drilling support
Inferred resources, with samples within the range of the variogr am and usually from more than one drill
hole. Where hole spacing is wider than 100m, as on the west side of Esperanç a South (see Figure 1), no
resources were estimated, even where the drilling contains significant intervals above the reporting cutoff;
these require further drilling before they can be incorporated into a future expanded areal footprint of the
resource.
Figure 1, Plan map of Castelo de Sonhos showing the location of the resource estimate
Qualified Person
Mo Srivastava (P.Geo.) VP of TriStar the Qualified Person for the mineral resource estimates presented in
this press release, has approved its publication.
About TriStar:
TriStar Gold is an exploration and development company focused on precious metals prope rties in the
Americas that have potential to become significant producing mines. The Company’s current flagship
property is Castelo de Sonhos in Pará State, Brazil. The Company’s shares are listed on the TSX Venture
Exchange under the symbol TSG. Further information is available at www.tristargold.com.
For further information, please contact:
TriStar Gold Inc.
Nick Appleyard
President and CEO
480-794-1244
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture
Exchange) accepts responsibility for the adequacy or accuracy of this release. No stock exchange, securities commission or other
regulatory authority has approved or disapproved the information contained herein.
Forward-Looking Statements
Certain statements contained in this press release may constitute forward-looking statements under Canadian securities legislation
which are not historical facts and are made pursuant to the "safe harbour" provisions under the United States Private Securit ies
Litigation Reform Act of 1995. Generally, forward-looking information can be identified by the use of forward-looking terminology
such as “expects” or “it is expected”, or variations of such words and phrases or statements that certain actions, events or results
“will” occur. Forward looking statements in this press release include, the scope and success of the planned exploration program
at the Castelo de Sonhos project and the Company's opinion that it has clear title to the Castelo de Sonhos property Such forward-
looking statements are based upon the Company's reasonable expectations and business plan at the date hereof, which are subject
to change depending on economic, political and competitive circumstances and contingencies. Readers are cautioned that such
forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause a c hange in such
assumptions and the actual outcomes and estimates to be materially different from those estimated or anticipated future resul ts,
achievements or position expressed or implied by those forward -looking statements. Risks, uncertainties and other factors that
could cause the Company's plans to change include changes in demand for and price of gold and other commodities (such as fuel
and electricity) and currencies; changes or disruptions in the securities markets; legislative, political or economic developments
in Brazil; the need to obtain permits and comply with laws and regulations and other regulatory requirements; the possibility that
actual results of work may differ from projections/expectations or may not realize the perceived potential of the Company’s
projects; risks of accidents, equipment breakdowns and labour disputes or other unanticipated difficulties or interruptions; the
possibility of cost overruns or unanticipated expenses in development programs; operating or technical difficulti es in connection
with exploration, mining or development activities; the speculative nature of gold exploration and development, including the risks
of diminishing quantities of grades of reserves and resources; and the risks involved in the exploration, development and mining
business. Although management of the Company has attempted to identify important factors that could cause actual results to differ
materially from those contained in forward- looking statements or forward-looking information, there may be other factors that
cause results not to be as anticipated, estimated or intended. The Company disclaims any intention or obligation to update or revise
any forward-looking statements whether as a result of new information, future events or otherwise, except as required by applicable
securities laws.