Niogold Mining : Drills 1.51 g/t Au over 38.3 metres at Marban

NioGold Drills 1.51 g/t Au over 38.3 metres at Marban

April 7, 2015

Val-d'Or, Quebec -- NioGold Mining Corporation (TSX-V: NOX) (OTCQX: NOXGF) ("NioGold") is pleased to release the results of sixteen (16) new diamond drill holes of its infill program on the modelled open pit shell of the Marban deposit, located on NioGold's 100% owned Marban Block property in the Malartic Gold camp, Abitibi District, Quebec.

Drilling highlights from this set of holes include:

• 1.16 g/t Au over 15.2 m including 9.13 g/t Au over 1.1 m in hole MB-14-375 at a vertical depth of 140 m.
• 1.51 g/t Au over 38.3 m in hole MB-14-378 at a vertical depth of 210 m.
• 14.61 g/t Au over 1.2 m in hole MB-14-378 at a vertical depth of 250 m.
• 11.57 g/t Au over 0.9 m in hole MB-14-385 at a vertical depth of 50 m.
• 19.46 g/t Au over 1.0 m in hole MB-14-385 at a vertical depth of 80 m.
• 20.76 g/t Au over 1.9 m in hole MB-14-390 at a vertical depth of 125 m.

This new series contains drill holes in the western, eastern and central portions of the deposit. The new holes located in the western part are designed to complete the 25 metre infill pattern on each section as well as between the 50 metre-spaced drill sections. Several holes intersected the extensions of lenses that include mainly inferred, and in some cases, indicated resources. In the table below, the intercepts labelled "New" should allow for the definition of new lenses.

Robert Wares, NioGold's President and CEO, stated: "In an open pit context, all intercepts likely to form continuous zones are interesting since those lenses could generate futures resources in areas within the modelled pit shell that currently contain little or no resources. The new intercepts demonstrate upside and that the Marban deposit is characterized along its whole length by high grade zones surrounded by lower grade halos."

With these sixteen (16) new holes totaling 5,325.9 metres, a total of 49 drill holes for a cumulative length of 16,894 meters have been assayed and released. These holes are spread over a strike length of 1,075 meters of the Marban deposit. Of the 50,000 meter infill drill program, a total of 33,000 metres of drilling have been completed so far.

Results from holes MB-14-375 to MB-14-390 are summarized below:

Hole	Easting (m)1	Northing (m)1	Azimuth	Dip	Hole Length (m)	From (m)	To (m)	Length (m)	Grade (g/t Au)	Zones
MB-14-375	3993	4119	178°	-49°	387	186.7	201.9	15.2	1.16	Z-E
incl	188.0	189.1	1.1	9.13	E
290.2	299.6	9.4	1.31	T
MB-14-376	4349	4130	177°	-80°	318	45.8	47.0	1.2	2.45	Hw
MB-14-377	3950	4333	180°	-45°	519	329.5	330.6	1.1	4.77	Z
479.1	483.6	4.5	1.83	A
MB-15-378	4350	3933	182°	-57°	352.9	181.2	182.2	1.0	8.66	Lense
228.9	267.2	38.3	1.51	C-P
296.5	297.7	1.2	14.61	New
MB-15-379	4350	3893	182°	-53°	183.6	69.5	72.6	3.1	3.00	Lense
83.6	91.2	7.6	0.97	E
178.0	183.6	5.6	1.07	B
MB-15-380	4351	3772	180°	-45°	237	193.9	202.9	9.0	0.83	Fw
MB-15-381	4648	3904	183°	-50°	399	250.4	255.2	4.8	2.04	V
MB-15-382	4647	3879	181°	-45°	260	130.8	131.6	0.8	2.18	D3
MB-15-383	3899	4274	176°	-57°	477	249.3	252.9	3.6	1.06	2
MB-15-384	3575	4177	176°	-51°	291.7	164.3	166.3	2.0	5.65	2
MB-15-385	3575	4103	181°	-52°	252	61.6	62.8	1.2	4.05	Lense
65.3	66.2	0.9	11.57	Lense
102.0	103.0	1.0	19.46	Lense
MB-15-386	4349	4080	177°	-73°	330	101.2	101.7	0.5	6.91	Hw
203.4	208.2	4.8	0.98	E
MB-15-387	4349	4040	179°	-67°	427.7	223.9	234.7	10.8	1.17	D
237.3	238.2	0.9	7.29	B
413.3	414.5	1.2	6.86	Fw
MB-15-388	3626	4213	181°	-52°	321	200.3	218.4	18.1	0.94	2
240.0	243.3	3.3	3.18	Z
302.0	303.0	1.0	9.70	E
MB-15-389	3625	4176	175°	-52°	300	26.5	32.2	5.7	1.46	Lense
40.6	48.7	8.1	1.16	Lense
MB-15-390	3626	4099	178°	-51°	270	63.6	64.8	1.2	5.47	New
141.6	142.8	1.2	6.07	2
152.1	154.0	1.9	20.76	New
162.1	163.2	1.1	6.89	Y

1: Marban grid

A map showing the location of the best results is available at: http://www.niogold.com/news/2015/april07/marban-best-results-apr-2015.jpg

A longitudinal showing the new best results obtained on the Marban deposit is available at: http://www.niogold.com/news/2015/april07/marban-longitudinal-apr-2015.jpg

Technical Info, QA/QC and Qualified Persons

Drill orientations are roughly perpendicular to dip of mineralized zones and true widths of mineralized zones represent minimum 90% of reported core intervals.

Diamond drill holes were drilled with NQ-size core, except for holes that traversed underground workings which were completed using BQ-size core. The core was sealed and delivered by the drilling contractor to NioGold's facilities located at the Norlartic mine site. The core was photo-graphed for reference, logged and mineralised sections were sawed in half. Sample lengths vary between 0.5 to 1.5 metres. Half core samples were bagged, sealed and delivered to Actlabs in Ste Germaine Boule, Quebec, which is an accredited laboratory. The remaining core is stored on site for reference. Samples were assayed by the fire-assay method using an atomic absorption finish on a 50-gram pulp split. A quality assurance and quality control program (QA/QC) was implemented by NioGold and the laboratory to insure the precision and reproducibility of the analytical method and results. The QA/QC program includes the insertion of standards, blanks and field duplicates in the sample batches sent to the laboratory and a systematic re-assaying of samples returning values above 3 g/t Au by fire-assay using a gravimetric finish. As well, pulps grading above 0.5 g/t Au or mineralized intervals are sent to Bourlamaque Assay Laboratories Ltd. in Val-d'Or for check assaying.

Drill program design and monitoring, core logging and sample preparation are being executed at NioGold's facilities in Val d'Or, under the supervision of Yan Ducharme, M.Sc., P.Geo. (OGQ), NioGold's Vice-President Exploration and a Qualified Person as defined by National Instrument 43-101. QA/QC program utilized is consistent with NI 43-101 and industry best practice standards. This news release was prepared by Mr. Ducharme.

NioGold Mining Corporation - « On Canada's Golden Highway »

NioGold Mining Corporation is a mineral exploration and development company focused on gold. The Company's projects are located in the heart of Quebec's prolific Abitibi gold mining district. The Cadillac, Malartic and Val-d'Or mining camps in this district have produced over 45 million ounces of gold since the 1930's and presently encompass six producing gold mines, including the prolific Canadian Malartic mine located adjacent to NioGold's flagship Marban project. NioGold's land holdings within the Abitibi presently cover 125km2 and encompass seven former gold producers, notably the Norlartic, Kierens, Marban and Malartic Hygrade mines that collectively produced 630,000 ounces of gold.

NioGold's experienced and qualified technical team are overseeing the advancement of these projects, targeting expansion of the resource base and reserve definition of the Marban Block project.

NioGold invites you to visit the company website at www.niogold.com.

For information on NioGold Mining Corporation contact:

Michael A. Iverson,
[e-mail]
Tel: [phone]

Dale Paruk
[e-mail]
Tel: [phone]
Toll-free: [phone]

Louis Baribeau
[e-mail]
Tél: [phone]

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

FORWARD-LOOKING STATEMENTS

This news release includes "forward looking statements", as that term is defined in Section 27A of the Unites States Securities Act of 1933, as amended, and Section 21E of the United States Exchange Act of 1934, as amended, that are subject to assumptions, risks and uncertainties. Statements in this news release which are not purely historical are forward looking statements, including without limitation any statements concerning the Company's intentions, plans, estimates, expectations or beliefs regarding the future. Although the Company believes that any forward looking statements in this news release are reasonable, there can be no assurance that any such forward looking statements will prove to be accurate. The Company cautions readers that all forward looking statements, including without limitation those relating to the Company's future operations and business prospects, are based on assumptions none of which can be assured, and are subject to certain risks and uncertainties that could cause actual events or results to differ materially from those indicated in the forward looking statements. Readers are advised to rely on their own evaluation of such risks and uncertainties and should not place undue reliance on forward looking statements.

Any forward looking statements are made as of the date of this news release, and the Company assumes no obligation to update the forward looking statements, or to update the reasons why actual events or results could or do differ from those projected in the forward looking statements. Except as required by law, the Company assumes no obligation to update any forward looking statements, whether as a result of new information, future events or otherwise.

CAUTIONARY NOTE TO U.S. INVESTORS

The United States Securities and Exchange Commission (the "SEC") permits U.S. mining companies, in their filings with the SEC, to disclose only those mineral deposits that a company can economically and legally extract or produce. The Company may use certain terms in this news release, such as 'measured resources', 'indicated resources' and 'inferred resources', which the SEC guidelines strictly prohibit U.S. registered companies from including in their filings with the SEC. The news release may contain information about adjacent properties on which the Company has no right to explore or mine. U.S. investors are cautioned that mineral deposits on adjacent properties may not be indicative of mineral deposits on the Company's properties.