Orosur Mining : Colombia Update

Orosur Mining Inc - Colombia Update

• Assays from nine additional holes
• Multiple high-grade gold intersections with associated silver and zinc- including 59.55m @ 9.61g/t Au and 61.75m @ 2.05g/t Au.
• Current drilling program nearing completion as planned
• Further assays expected in due course
• Regional field work progressing well.
• Major geophysical surveys planned.

London, July 6th, 2021. Orosur Mining Inc. ("Orosur" or the "Company") (TSX/AIM:OMI), is pleased to announce an update on the progress of Minera Anzá's drilling campaign currently underway at the Company's Anzá project in Colombia.

Results of further nine holes (MAP-083 to MAP-091).

Assay results for nine additional diamond drillholes have been received from the ALS Chemex's laboratory in Lima, Peru.

Significant results from these holes include:

MAP-086 3.90m @ 6.13g/t Au, 17.27g/t Ag, 0.79% Zn 18.72m @ 2.85g/t Au, 2.95g/t Ag, 1.59% Zn

MAP-089 4.3m @ 9.31g/t Au, 5.4g/t Ag, 6.14% Zn

59.55m @ 9.61g/t Au, 6.23g/t Ag, 3.75% Zn

MAP-090 3.1m @ 12.96g/t Au, 2.56g/t Ag, 4.66% Zn

6.05m @ 9.91g/t Au, 1.56g/t Ag, 0.48% Zn

3.70m @ 7.43g/t Au, 1.38g/t Ag, 0.08% Zn

MAP-091 61.75m @ 2.05g/t Au, 3.3g/t Ag, 0.82% Zn

Full results are detailed in table 1:

Hole No	From (m)	To (m)	Interval (m)	g/t Au	g/t Ag	% Zn
MAP083	191.40	207.95	16.55	0.88	15.11	0.50
including	195.30	207.95	12.65	1.08	19.52	0.41
MAP083	219.80	232.20	12.40	0.20	0.93	0.85
including	224.94	228.10	3.16	0.29	1.20	2.40
MAP083	232.20	245.60	13.40	0.32	1.10	2.61
including	232.90	234.00	1.10	1.19	2.04	7.88
MAP084	258.00	260.30	2.30	1.66	0.74	0.57
MAP084	344.85	345.60	0.75	0.84	1.48	9.09
MAP085	301.55	327.00	25.45	0.48	2.64	0.47

including	314.80	317.70	2.90	1.27	2.87	2.41
including	324.70	326.25	1.55	1.03	4.05	1.46
MAP086	179.20	183.10	3.90	6.13	17.27	0.79
including	180.70	181.30	0.60	36.00	63.80	4.44
MAP086	215.35	234.07	18.72	2.85	2.95	1.59
including	216.90	220.35	3.45	3.02	2.49	1.40
including	226.7	230.2	3.50	8.18	4.70	1.55
including	232.57	233.10	0.53	9.01	7.66	0.78
MAP086	242.61	243.95	1.34	0.61	1.10	1.76
MAP087	119.70	120.65	0.95	1.14	8.49	0.57
MAP087	152.80	155.35	2.55	0.95	6.84	3.53
including	154.90	155.35	0.45	1.87	8.84	1.71
MAP087	200.85	203.20	2.35	0.38	3.81	-
MAP087	222.50	223.150	0.65	2.98	0.61	0.78
MAP087	231.40	232.10	0.70	6.92	1.32	1.10
MAP087	320.10	323.00	2.90	0.36	11.39	0.42
MAP088	204.30	207.70	3.40	0.34	21.92	0.01
MAP088	218.64	223.05	4.41	0.29	2.61	1.00
MAP088	246.80	278.25	31.45	0.74	1.96	0.21
including	247.40	253.05	5.65	1.29	2.54	0.19
including	276.20	278.25	2.05	1.70	2.07	0.25
MAP088	284.75	296.4	11.65	0.78	2.31	2.15
MAP088	438.25	443.35	5.10	0.68	11.40	0.05
MAP089	204.00	204.75	0.75	7.08	100.00	0.19
MAP089	214.55	218.60	4.05	1.30	7.16	0.16
MAP089	251.10	255.40	4.30	9.31	5.40	6.14
including	251.75	254.50	2.75	14.16	7.67	9.38
MAP089	275.10	334.65	59.55	9.61	6.23	3.75
including	288.95	323.70	34.75	15.86	7.56	6.21
including	311.45	323.70	12.25	36.08	11.65	8.48
MAP090	149.95	152.40	2.45	1.14	3.46	1.58
including	150.55	151.40	0.85	2.51	5.96	2.61
MAP090	158.05	159.35	1.30	2.56	2.41	2.58
including	158.90	159.35	0.45	6.40	1.88	6.16
MAP090	174.30	177.40	3.10	12.9	2.7	4.67
including	175.40	177.40	2.00	19.80	2.55	2.36
MAP090	180.15	186.20	6.05	9.91	1.56	0.48
including	181.65	182.40	0.75	24.40	2.06	0.93
including	184.50	186.20	1.70	22.58	3.35	0.80
MAP090	206.00	209.70	3.70	7.43	1.38	0.08
including	208.40	208.95	0.55	44.00	4.59	0.05
MAP090	225.25	229.2	3.95	0.96	2.47	0.02
including	227.90	229.20	1.3	2.23	1.69	0.02
MAP090	289.70	290.90	1.20	5.64	2.15	0.11
MAP091	99.10	99.85	0.75	1.33	4.27	0.02

MAP091	106.70	108.30	1.60	0.55	6.99	0.03
MAP091	115.00	120.30	5.30	1.09	1.93	0.16
including	115.00	115.60	0.60	4.60	3.33	0.44
MAP091	142.10	153.25	11.15	0.46	0.71	0.25
MAP091	162.70	166.55	3.85	1.33	1.01	0.44
including	165.15	166.00	0.85	3.79	1.11	0.29
MAP091	199.70	202.20	2.50	6.82	0.95	-
MAP091	222.55	284.3	61.75	2.05	3.30	0.83
including	223.00	224.80	1.80	8.75	5.28	2.91
including	232.00	233.00	1.00	4.34	3.85	2.12
including	237.90	238.30	0.40	6.99	4.03	4.54
including	250.50	253.05	2.55	9.08	2.78	0.75
including	268.05	277.45	9.40	5.12	3.25	2.37
MAP091	316.2	320.88	4.68	2.33	1.72	0.14
including	320.4	320.88	0.48	11.10	4.30	0.89
MAP091	346.00	355.75	9.75	0.92	0.23	0.02
including	346.00	348.65	2.65	1.93	0.30	0.02

Table 1. Drill Intercepts*.

(* Intersections are reported as down-hole widths, not true widths. The Company does not yet have

sufficient drilling information to accurately calculate true widths of drill hole intersections.

These nine holes have been successful in providing greater guidance as to the shape and nature of gold mineralisation at APTA, specifically identifying a number of thick, high-grade, plunging shoots, surrounded by a lower grade halo. The Anzá geological team is working to develop 3D models of the mineralisation that will assist in future targeting.

Economically, such shoots could be highly significant as they would likely be of extreme importance for any operation at APTA, and therefore represent the primary target for ongoing drilling.

The mineralisation thus far extends over a strike length in excess of 800m and remains open in several directions according to the most recent interpretation of the mineralisation.

Figure 1. Drill Hole Locations

Figure 2. Mineralisation Outline, North APTA

Figure 3. Section MAP-089 and MAP-085 (off section)

Figure 4. Section MAP-091