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Erdene Provides Regional Exploration Update; High-Grade Gold Intersected at Altan Arrow, 70 g/t over 2 metres, 3.4 Kilometres North of Bayan Khundii

Drill Results Exploration Programs

ERDENE RESOURCE DEVELOPMENT CORP.

Erdene Provides Regional Exploration Update; High-Grade Gold Intersected

at Altan Arrow, 70 g/t over 2 metres, 3.4 Kilometres North of Bayan Khundii

Halifax, Nova Scotia - January 24, 2018 - Erdene Resource Development Corp. (TSX:ERD)

("Erdene" or "Company") is pleased to provide an update on Q4-2017 exploration results for its

regional gold projects in the vicinity of the Company’s flagship Bayan Khundii Gold Project in

southwest Mongolia.

2017 REGIONAL EXPLORATION HIGHLIGHTS

(see attached plan maps and cross-sections for reference)

 Results from 2017 geological mapping identify numerous zones of siliceous and vuggy

residual quartz, intense argillic alteration, and anomalous gold within a 3 by 6 km area

spanning the central part of the Bayan Khundii/Altan Arrow license.

 Altan Arrow prospect further defined as a 0.5 by 1 km target area adjacent to a major

northeast-trending extensional fault containing multiple zones of epithermal quartz

veining with rock chip and trench results returning several samples in the 5 g/t to 57 g/t

gold range.

 Q4 d rilling has returned the highest grades to date at Altan Arrow and demonstrated

continuity of a high-grade gold zone south of the main Altan Arrow structure with 70 g/t

gold over 2 metres (AAD-12).

 Q4 drilling of a new target area 200 metres southwest of the main Altan Arrow structure

and 300 metres west of AAD-12 returned 39 g/t gold over 1 metre, near-surface.

 The Khundii North target, 2.5 km east of Altan Arrow , has now been traced over 1 km

through gold in soils and rock chips with values up to 22 g/t gold.

 Q4 drilling at Altan Nar included three holes and confirmed continuity of gold -

polymetallic mineralization at the Maggie prospect and identified gold mineralization

associated with subsidiary structures at the Discovery Zone.

 A detailed exploration program was also completed at the neighbouring Ulaan Copper-

Gold Project over the entire license area, consisting of geological mapping, prospecting,

rock chip sampling, grid soil geochemical sampling, and induced polarization survey.

“Today’s high-grade gold results from Altan Arrow and impressive initial rock chip r esults from

Khundii North continue to demonstrate the highly prospective nature of the broader district for

the discovery of additional epithermal gold deposits,” said Peter Akerley, Erdene’s President and

CEO. “Our 2018 programs will continue to develop the se central Khundii licen se prospects

adding to our established Bayan Khundii and Altan Nar gold systems.”

DISCUSSION OF RESULTS

In addition to drilling at Bayan Khundii (results reported earlier this month ), the Company

completed significant exploration work during Q4 -2017 on several of its metal prospects in the

larger district, which is now known to host the full spectrum of arc -related base and precious

metal systems, including copper -silver and copper-molybdenum porphyries, intermediate

sulphidation / carbonate base metal gold deposits, and low sulphidation epithermal gold and

gold-silver systems . The Company’s Q4 -2017 work includ ed detailed evaluation of targets

within its 11.4 km long 100%-owned Khundii license. Particular focus was placed on the Altan

Arrow project and the Khundii North prospect, 3.4 kilometres and 3.2 kilometres north of the

Company’s Bayan Khundii project, respectively. The Company also began evaluation of its

recently-optioned Ulaan copper-gold prospect, located immediately west of Bayan Khundii , and

expanded the exploration program on its 100%-owned Altan Nar gold-polymetallic project, 16

kilometres northwest of Bayan Khundii.

ALTAN ARROW GOLD PROJECT

The Altan Arrow gold prospect is located at the intersection of proposed major deep -seated

structures, as defined by a recent structural analysis of Erdene’s license areas, described in the

Company’s January 10 , 2018 press release (click here). Today’s news release includes results

from a limited, three-hole, 450 metre drill program at Altan Arrow.

The program included one hole testing a new , highly anomalous gold-in-soil anomaly extending

over a 200 metre area to the south of the main northeast-trending structure. Follow-up surface

sampling and geological mapping of the soil anomaly in Q3-2017 resulted in the discovery of

surface quartz vein rubble that returned 27 g/t gold along an east-west trending structure . A

single hole, AAD -11, tested this new prospect and intersected multiple anomalous gold zones

spread over the 100 metre length of the hole (45 degree angle), including a shallow gold-bearing

epithermal vein at 11 metres vertical depth that returned 1 metre of 39 g/t gold and 8 g/t silver.

Anomalous gold (0.1 g/t to 0.3 g/t) was intersected surrounding this high-grade vein over a 14

metre wide zone of quartz-sericite altered Devonian andesite cut by quartz veins.

Prior to the Q4 -2017 drill program, the only hole completed along this east -west structure was

AAD-03, approximately 300 metres east of AAD -11. AAD -03 intersected 2 metres of 23.5 g/t

gold at 50 metres vertical depth. Hole AAD -12, announced today, was a 150 metre deep hole

drilled to test the continuity of that intersection at depth , and returned 2 metres of 70.1 g/t gold

and a second intersection of 2 metres of 1.3 g/t gold within 100 metres of surface.

See attached cross-sections for reference.

The drilling results discussed above (AAD-03, -11, -12) are the only holes thus far that have

tested subsidiary structures (splays) off the main northeast-trending Altan Arrow structure that

hosts the originally targeted epithermal vein s and breccias. These cross structures potentially

represent similar extensional faults to those observed at Bayan Khundii, 3.4 kilometres south.

North of the main Altan Arrow structure, a single hole (AAD–10) tested an induced polarization

chargeability target with significant zones of intense residual quartz -sericite and advanced

argillic (dickite, diapsore, pyrophyllite, kaolinite, alunite and zu nyite) alteration observed at

surface. Hole AAD -10 intersected intense quartz-sericite and advanced argillic alteration with

abundant disseminated, vein and breccia -type pyrite throughout the hole and locally elevated

copper values. Mineralization and the litho-cap style alteration is consistent with alteration

above a possible porphyry system at depth.

The northeast-trending faults running through Bayan Khundii and Altan Arrow, as outlined in

the attached Figure 2, are part of a larger network of regional northeast-trending transverse faults

that are present throughout the larger district. The thoroughgoing structure at Bayan Khundii can

be traced 4.6 kilometres northeast to the untested Khundii North prospect where areas of quartz

stockwork, chalcedonic quartz with hematite breccia clasts ha ve returned 5 rock samples greater

than 0.5 g/t gold and up to 22.7 g/t gold.

ALTAN NAR GOLD POLYMETALLIC DEPOSITS

The Company also completed a three -hole, 450 metre drill program at its Altan Nar gold-

polymetallic project (“Altan Nar”) as part of its Q4 -2017 drill program. Holes were oriented to

test extensions of gold -polymetallic mineralization along trend of the Discovery Zone deposit

and at the Maggie Zone target, 800 metres north of the Discovery Zone.

The Maggie target has received only two , wide-spaced holes in previous drilling , including a

hole completed in Q3-2017 that returned 5 metres of 5.3 g/t gold equivalent* (“AuEq”) (4.8 g/t

gold, 10.4 g/t silver, and 0.8% combined lead-zinc) at 31 metres depth, including 1 metre of 23.8

g/t AuEq (22.3 g/t gold). Q4-2017 drill hole TND-133 tested the northeast extent of a 350-metre

long structure at Maggie and intersected a highly anomalous gold and base metal zone over a 75-

metre width, locally interrupted by post-mineral dykes. Excluding 25 metres of barren dykes the

zone in TND -133 returned an average grade of 0.7 g/t AuEq (0.4 g/t gold, 4.2 g/t silver, and

0.46% combined lead-zinc) with individual gold values up to 4.8 g/t over 1 metre.

Drilling in the Discovery Zone was designed to further define mineralized subsidiary structures,

peripheral to, and trending north and northeast of, the Discovery Zone, and a similar zone

trending northeast. These holes, located approximately 75 metres and 250 metres from the

central Discovery Zone deposit area returned anomalous gold at relatively low levels with up to

3.6 g/t in TND-131 over 1 metre at 73 metres depth.

* Gold equivalent (“AuEq”) has been used to express the combined value of gold, silver, lead

and zinc as a percentage of gold, and is provided for illustrative purposes only. No allowances

have been made for recovery losses that may occur should mining eventually result. Calculations

use metal prices of US $1200/oz gold, $18/oz silver, and $0.90/lb for lead and zinc.

ULAAN COPPER-GOLD PROJECT

A detailed exploration program was completed over the entire Ulaan license area in H2 -2017.

Work included; detailed geological mapping, including alteration mapping and short -wave

infrared (S WIR) analysis of altered surface samples; prospecting and rock chip sampling; a

close-spaced (100 metre grid ) soil geochemical survey; and a 89 -line kilometre pole-dipole

induced polarization survey. Results from this work are being reviewed and will be reported on

in later communications.

FUTURE PLANS

The Erdene technical team has now received all results f rom its 2017 exploration program.

Compilation and interpretation of those results in Q1-2018 will lead to the development of 2018-

19 exploration plans and budgets in Q1 and with commencement of the 2018 program in early

Q2. Of particular importance in the establishment of the 2018 program will be follow -up drilling

to further evaluate the high -grade gold mineralization in Midfield North at Bayan Khundii

announced January 10, 2018, and the gold intersections announced today at Altan Arrow.

QUALIFIED PERSON AND SAMPLE PROTOCOL

Michael MacDonald, P.Geo. (Nova Scotia), Vice President Exploration for Erdene, is the

Qualified Person as that term is defined in National Instrument 43 -101 and has reviewed and

approved the technical information contained in this news release. All samples have been

assayed at SGS Laboratory in Ulaanbaatar, M ongolia. In addition to internal checks by SGS

Laboratory, the Company incorporates a QA/QC sample protocol utilizing prepared standards

and blanks.

Erdene’s sampling protocol for drill core consisted of collection of samples over 1 m etre or 2

metre intervals (depending on the lithology and style of mineralization) over the entire length of

the drill hole, excluding minor post -mineral lithologies and un -mineralized granitoids. Sample

intervals were based on meterage, not geological controls or mineralizati on. All drill core was

cut in half with a diamond saw, with half of the core placed in sample bags and the remaining

half securely retained in core boxes at Erdene’s Bayan Khundii exploration camp. All samples

were organized into batches of 30 samples including a commercially prepared standard, blank,

and either a field duplicate, consisting of two ¼ core intervals, or a laboratory duplicate . Sample

batches were periodically shipped directly to SGS in Ulaanbaatar via Erdene’s logistical

contractor, Monrud Co. Ltd.

ABOUT ERDENE

Erdene Resource Development Corp. is a Canada -based resource company focused on the

acquisition, exploration, and development of base and precious metals in underexplored and

highly prospective Mongolia. The Company has interests in five exploration licenses and a

mining license in southwest Mongolia. In addition to the Bayan Khundii project, other deposits

and prospects within these licenses include: Altan Nar – an extensive, high-grade, near-surface,

gold-polymetallic project located 16 kilometres northwest of Bayan Khundii that the Company is

actively advancing; Altan Arrow – an early -stage gold -silver project 3.5 kilometres north of

Bayan Khundii; Ulaan – a recently acquired copper -gold porphyry prospect adjacent to Bayan

Khundii; Khuvyn Khar – an early -stage, copper -silver porphyry project with multiple drill

targets and significant copper intersecti ons; Nomin Tal – a narrow, high -grade copper -gold

discovery; and Zuun Mod – a large mol ybdenum-copper porphyry deposit. In addition to the

above properties, the Company has an Alliance with Teck Resources Limited on regional

copper-gold exploration in the prospective Trans Alta i region of southwest Mongolia. The

Bayan Khundii license has a 2% net smelter returns royalty (“NSR Royalty”) in favour of

Sandstorm Gold Ltd. with a buy -back option to reduce the NSR Royalty to 1%. For further

information on the Company, please visit www.erdene.com. Erdene has 145,963,086 issued and

outstanding common shares and a fully diluted position of 156,592,160 common shares.

FORWARD-LOOKING STATEMENTS

Certain information regarding Erdene contained herein may constitute forward -looking

statements within the meaning of applicable securities laws. Forward -looking statements may

include estimates, plans, expectations, opinions, forecasts, projections, guida nce or other

statements that are not statements of fact. Although Erdene believes that the expectations

reflected in such forward -looking statements are reasonable, it can give no assurance that such

expectations will prove to have been correct. Erdene cau tions that actual performance will be

affected by many factors, most of which are beyond its control, and that future events and results

may vary substantially from what Erdene currently foresees. Factors that could cause actual

results to differ materially from those in forward -looking statements include ma rket prices,

exploitation and exploration results, continued availability of capital and financing and general

economic, market or business conditions. The forward-looking statements are expressly qualified

in their entirety by this cautionary statement. The information contained herein is stated as of the

current date and is subject to change after that date. The Company does not assume the

obligation to revise or update these forward-looking statements, except as may be required under

applicable securities laws.

ERDENE CONTACT INFORMATION

Peter C. Akerley, President and CEO

or

Ken W. MacDonald, Vice President and CFO

Phone: (902) 423-6419

E-mail: [email protected]

Website: www.erdene.com

Twitter: https://twitter.com/ErdeneRes

No Regulatory Authority Has Approved or Disapproved The Contents of This Release