GR Silver Mining Ltd.
GR Silver Mining holds a 78 km2 100%-owned package in the historic Rosario Mining District of Sinaloa, Mexico, anchored by the former-producing Plomosas polymetallic mine and the San Marcial deposit. A 20,000-metre step-out drill program at San Marcial and pilot-plant engineering/metallurgical work at Plomosas are both underway in 2026, targeting an updated resource estimate and a PEA by late 2026; Mexico's environmental regulator has confirmed a new environmental impact authorization will not be required to restart the former Plomosas mine.
Notable vs. Peers
- Financials score of 7.5/10 is stronger than the peer average of 5.8/10.
Lifecycle Milestones
Not yet determined: mill, tailings facility.
Jurisdiction (40%)6/10
Sinaloa is an established Mexican mining state, but 2023 federal mining-law reform and regional security considerations add real policy risk versus top-tier jurisdictions.
Infrastructure (40%)7.9/10
Confirmed road access and confirmed grid power at Plomosas and San Marcial Silver-Gold Projects, Sinaloa, Mexico; existing mill and tailings facility not yet researched, counted at a neutral 5/10 until established.
Nearby producing mine (20%)Not yet researched
No project coordinates on file yet, so distance to a producing mine can't be measured.
Acquisition Susceptibility
A relative ranking of how closely this company matches the profile of juniors that have actually been acquired — not a probability, and not a reason to buy. Acquisitions are rare: only a few dozen significant deals happen a year across a universe of thousands of juniors, so even a high score here describes a long shot. The strongest signal in the research, a producer that already owns part of the company, is scored from its disclosed strategic shareholders. A producer that is a joint-venture or earn-in partner on the project, rather than a shareholder, isn't captured yet.
How this score is built
- Disclosed pending dealSub-score: Not scored
No pending acquisition or merger disclosed (checked)
Not scored: having no deal in flight isn't held against a company.
Weight 26.25% - Producer's strategic stakeSub-score: Not scored
No producer holds a disclosed stake on file (holder register researched) See holders
Not scored: most juniors that do get bought had no prior toehold, so a missing stake says little either way.
Weight 25% - Distance to a producing mineSub-score: Not yet researched
Distance not yet researched: no project coordinates on file
Distance can't be measured without coordinates, so excluded rather than counted as far.
Weight 22.5% - Lifecycle stageSub-score:3.5/10
Stage: Resource Definition
Feasibility and permitting score 10, where deals cluster, and production 5.5; earlier stages score less, down to 1 at grassroots.
Weight 15% · 57% here - JurisdictionSub-score:6/10
Mexico: jurisdiction score 6/10
Our jurisdiction score, used as is: higher means lower political and permitting risk.
Weight 6.75% · 26% here - CommoditySub-score:5/10
Primary commodity: Silver
Gold 10, copper 8, silver 5, nickel and uranium 4, others 2: most majors' deals are for gold.
Weight 4.5% · 17% here
Weight is each input's share of the full score. “Here” is its share of this company's score: inputs that aren't scored are left out and the rest re-weighted, never counted as zero.
Your Rankings
Management Team
Interim President and Chief Executive Officer and a director of GR Silver Mining Ltd., which is advancing the Plomosas Project in Sinaloa, Mexico; also Chairman of Critical Elements Lithium Corporation. Canadian geologist with over 30 years of mining capital markets experience.
Chief Financial Officer of GR Silver Mining Ltd., which is advancing the Plomosas Project in Sinaloa, Mexico. Chartered Professional Accountant with broad financial and advisory expertise in the resource sector.
Vice President Exploration of GR Silver Mining Ltd., which is advancing the Plomosas Project in Sinaloa, Mexico. Over 20 years of district-scale exploration and drilling program leadership.
Country Manager of GR Silver Mining Ltd., which is advancing the Plomosas Project in Sinaloa, Mexico. Geologist with over 35 years of experience leading exploration, permitting, and development of major silver projects from discovery to production.
Insiders, Investors & Smart Money
Notable shareholders and insiders whose involvement is worth knowing about, plus what we're seeing from institutional/large-investor activity.
Two GR Silver Mining directors, Marcio Bastos Fonseca and Eric Zaunscherb, bought shares with their own money in December 2025 and February 2026, with no insider selling in that period -- a genuine, if modest, vote of confidence. No producer or resource fund currently holds a meaningful stake in the company.
No notable insiders tracked for this miner yet.
Reports, Presentations & Documents
GR Silver Mining owns 100% of a 78 km2 land package in the historic Rosario mining district of Sinaloa, Mexico, built around the former-producing Plomosas polymetallic mine and the San Marcial deposit. Indicated resources at the Plomosas project contain 55,000,000 oz of silver (15 Mt at 117 g/t), with no measured category, plus 22,000,000 oz inferred, alongside gold, lead and zinc, in an estimate effective 15 March 2023. In 2026 the company is running a 20,000 m step-out drill program at San Marcial, which has extended mineralization about 150 m southeast of the resource boundary, and pilot-plant engineering and metallurgical work at Plomosas, targeting an updated resource and a preliminary economic assessment by late 2026. Mexico's environmental regulator has confirmed that a new environmental impact authorization will not be required to restart the former Plomosas mine.