St. Cloud Mining

What St. Cloud Mining does

St. Cloud Mining Company, founded in 1983 and headquartered in Winston, New Mexico, is the largest producer of natural zeolites in North America. The company owns and operates four distinct zeolite mineral deposits that span the full commercially relevant spectrum of natural zeolites: Winston (clinoptilolite, New Mexico), Ash Meadows (clinoptilolite, Nevada/California), Bowie (chabazite, Arizona), and Rome (mordenite, Oregon). These deposits collectively represent estimated reserves exceeding 37 million tons and support annual production of 42,000–45,000 tons against consolidated processing capacity of approximately 50,000 tons per year. The underlying technology is mineralogical rather than chemical synthesis: zeolites are hydrated aluminosilicate cage-like molecular sieves with interconnected channels 0.3–0.7 nanometers in diameter, providing high cation exchange capacity (CEC), high specific surface area, and rigid frameworks that resist shrinking and swelling. Each deposit is differentiated by chemistry: Winston is high-calcium, low-sodium clinoptilolite suited to feed and odor control; Ash Meadows is a high-CEC clinoptilolite with pozzolanic properties that meet ASTM C618-15; Bowie is a rare chabazite with affinity for radionuclides used in nuclear cleanup at Fukushima Daiichi and Three Mile Island; and Rome is the largest drilled-out high-purity mordenite deposit in the United States. St. Cloud also holds two patents on modified zeolite compositions for mercury removal from coal-fired flue gases, available for licensing.

Products fall into six use cases: animal feed and livestock (the primary segment, addressing ammonia and nitrogen management), water treatment (NSF 61-certified media for municipal water, aquaculture, and wastewater), soil amendment and turf, odor and moisture control, environmental remediation, and specialty applications including cementitious pozzolan, desiccants, and catalysts. Beyond base minerals, St. Cloud produces modified specialty products in partnership with distributors and toll processors, including surfactant-modified zeolites (SMZ), iron-impregnated chabazite for arsenic/mercury/chromium capture, and ammonia-specific cation exchange resins.

The revenue model is primarily wholesale: B2B sales of bulk truck, supersack, and bagged product (10–50 lb) to distributors, brokers, manufacturers, and value-added resellers under private label, with a one-ton minimum order, supplemented by direct sales to end users, specialty and modified product sales, patent licensing of mercury-removal technology to coal-fired power plants, and consulting/technical collaboration for custom formulations. Pricing is quote-based and not publicly disclosed. Distribution is overwhelmingly domestic (United States), with over 75% of channel partners having collaborated with the company for over 20 years. Major reference customers include Kurion Inc. (Fukushima Daiichi water cleanup) and Water Remediation Technology, LLC, which operates over 100 NSF 61-certified municipal water treatment systems using St. Cloud media. The company holds 11–50 employees, and no funding rounds, public listing, or venture investment are present in the source material.

Name

St. Cloud Mining

Legal name

St. Cloud Mining Company

Website

https://stcloudmining.com

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

11–50 employees

Short description

St. Cloud Mining is the largest natural zeolite producer in North America, mining and processing clinoptilolite, chabazite, and mordenite from four U.S. deposits. It sells wholesale and direct into animal feed, water treatment, soil amendment, environmental remediation, and specialty industrial applications.

Ownership category

akta.pro rank

Product category

Industrial Minerals and Natural Zeolite Mining

NAICS

Nonmetallic Mineral Mining and Quarrying (2123), Other Nonmetallic Mineral Mining and Quarrying (21239)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Zeolites (Natural & Synthetic) (IMAEAFAN)

akta.pro secondary industry

Zeolites & Molecular Sieves (IMAEAIAE)

Keywords

• Natural zeolite mining
• Industrial mineral processing
• Clinoptilolite production
• Chabazite extraction
• Mineral supply wholesale

Headquarters

HQ city

Winston

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Supply Chain, Infrastructure, Technology or R&D, Others

Revenue model

1. Zeolite Product Sales (Wholesale): Primary revenue stream from wholesale supply of natural zeolites. Products are sold under private labeling arrangements through distributors, brokers, manufacturers, and value-added resellers. Minimum order quantity is one ton. Also sells direct to end users depending on volume requirements and specific market arrangements. Products include various mesh sizes in bulk truck, supersacks, and 10, 25, 40, and 50 lb bags.
2. Specialty/Modified Zeolite Products: Customized products for existing distributors including specialty impregnated fertilizer products for golf course and hydroponic applications. Also produces toll processed ammonia-specific cation exchange resin and surface modified zeolites (SMZ) materials.
3. Patent Licensing (Mercury Removal Technology): St. Cloud Mining holds two patents on modified zeolites used for mercury removal from flue gases at coal fired power plants. These technologies are available for licensing to coal-fired power plants.
4. Consulting & Technical Collaboration Services: St. Cloud provides consulting services and technical collaboration to formulate and produce modified or blended zeolite products tailored to highly specialized applications and customer requirements.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels3 records

Core offering

St. Cloud Mining operates four natural zeolite mining and processing properties (Winston, Ash Meadows, Bowie, and Rome) producing high-purity clinoptilolite, chabazite, and mordenite zeolites. The company mines, crushes, screens, packages, and distributes these natural zeolites in bulk truck, supersacks, and various bag sizes to wholesale distributors and end users across animal feed, water treatment, soil amendment, odor control, environmental remediation, and specialty industrial applications. The company also offers customized/specialty zeolite products, patent-licensed mercury removal technology, and technical collaboration services.

Product overview

St. Cloud Mining Company is the largest producer of high-quality, high-purity natural zeolites in North America, operating a suite of four distinct zeolite deposits: Winston Zeolite (clinoptilolite from New Mexico), Ash Meadows Zeolite (clinoptilolite from Nevada/California), Bowie Chabazite (from Arizona), and Rome Mordenite (from Oregon). These products share a common zeolite mineral foundation but differ in chemical composition, cation exchange capacity, and application suitability. Specialty Products offer modified variants including surfactant-modified zeolites (SMZ), iron-impregnated chabazite, and ammonia-specific exchange resins that extend the base zeolite portfolio for highly specialized industrial and environmental remediation applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Winston Zeolite High surface area clinoptilolite zeolite (25 m2/g) with high calcium and low sodium content, low clay content, and CEC of 0.9–1.1 meq/g. NSF 61 and WQA certified. Sold for animal feed supplements, water filtration, odor/moisture control, and soil amendment applications.
• Ash Meadows Zeolite High purity clinoptilolite zeolite (40 m2/g surface area, CEC 1.6–1.8 meq/g) with high CEC and pozzolanic properties meeting ASTM C618-15. NSF 61 certified. Used in water filtration, radioactive waste control, aquaculture, and cementitious products.
• Bowie Chabazite Rare natural chabazite zeolite with lightweight, extremely high surface area, high CEC, and chemical affinity for radionuclides. Used in nuclear cleanups (Fukushima, Three Mile Island), industrial odor control, and gas separation applications.
• Rome Mordenite High-purity mordenite zeolite sourced from the largest drilled-out mordenite deposit in the U.S. Water absorption percentage ranges from 108 to 120. Being assessed for animal litter and cementitious/pozzolanic applications.
• Specialty Modified Zeolite Products Customized zeolite products including surfactant-modified zeolites (SMZ) with organic carbon content 4–10% by weight, iron-impregnated chabazite for chromium/arsenic/mercury removal, ammonia-specific cation exchange resin, and specialty impregnated fertilizer products for golf courses and hydroponics.

Quantifiable outcome

• Ammonia reduction up to 95% in wastewater
• +7 more outcomes

Named customers4 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Kurion Inc.coreStrategic or Co-development Partner · 1 January 2011St. Cloud Mining worked with Kurion Inc., a company specializing in permanent disposal of nuclear and hazardous wastes, to develop zeolite applications for cleaning radioactive wastes and supplied zeolite media. Kurion, using St. Cloud Zeolite and Kurion's proprietary processing techniques, was responsible for 70% of the cleanup of water at Fukushima Daiichi in the first nine months after the disaster. St. Cloud continues to be one of the largest suppliers of media to the Fukushima disaster remediation efforts.
• Water Remediation Technology, LLC (WRT)coreChannel Partner/ Reseller/ DistributorWRT uses a modified, NSF 61 certified Ash Meadows Zeolite to remove radium, uranium, and other contaminants from municipal water treatment systems. WRT has over 100 systems deployed throughout the U.S. and is exploring the increasing problem of trace radioactive contaminants in frac and waste water from natural gas and oil production.
• Mercury Research Center (James F. Crist Generating Plant)minorStrategic or Co-development PartnerSt. Cloud's mercury removal technologies were tested in a pilot study at the Mercury Research Center, which used a portion of the James F. Crist Generating Plant's emissions for research.

Scale indicators9 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Bear River Zeolite: Idaho-based natural zeolite miner producing clinoptilolite for agriculture, water filtration, and industrial absorption — the closest North American direct competitor to St. Cloud's Winston and Ash Meadows operations.
• International Zeolite Corp. Canadian natural zeolite producer marketing clinoptilolite products for agriculture, water treatment, and animal feed, overlapping directly with St. Cloud's primary commercial segments.
• Idaho Minerals (KMI Zeolite): Natural zeolite miner/processor in Idaho supplying clinoptilolite for filtration, soil amendment, and odor control; competes head-on for agricultural and water-treatment wholesale customers.

Broad incumbents

• PQ Corporation: Global specialty chemicals and engineered materials company with synthetic zeolite offerings across detergent, catalyst, and filtration; broad incumbent with comparable end-markets but synthetic, not natural, mineral base.
• Honeywell UOP: Major industrial process technology and adsorbent manufacturer, including molecular sieve and synthetic zeolite products for gas separation, refining, and environmental applications — broad incumbent with overlapping end uses.
• Clariant: Swiss specialty chemicals company producing zeolite-based catalysts, adsorbents, and emission-control solutions across industrial verticals; broad incumbent competing for environmental remediation and FCC catalyst wallet share.
• Zeolyst International: Joint venture between Shell and Crane producing specialty zeolites for catalysts and adsorbents, serving refining, petrochemical, and emissions applications overlapping with St. Cloud's specialty/industrial segments.

Regional players

• Zeocem, a.s. Largest European natural zeolite producer in Slovakia with clinoptilolite products for agriculture, construction, and industry — comparable geology-to-application model but operating in Europe rather than North America.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/st.-cloud-mining-company

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about St. Cloud Mining