What Fieldstone Bio does

Fieldstone Bio is an MIT spinout founded in 2023 that develops engineered microbial biosensors combined with hyperspectral imaging and AI-driven analysis to detect critical minerals for the mining industry. The company's core product is a sensing platform: engineered microbes produce a distinct, optically readable signal when they detect target metals; a hyperspectral imaging pass captures that signal on drill cores, soil samples, or tailings; and proprietary AI converts the signal into high-resolution, parts-per-billion mineral maps that answer operational questions (where to sample next, where to drill, what to process). Currently available sensors target gold, copper, and arsenic, with silver, molybdenum, nickel, and rare earth elements in development. The technology is licensed from MIT's Dr. Christopher Voigt lab (published in Nature Biotechnology, 2025), and Voigt is a co-founder and scientific advisor.

Fieldstone serves three customer segments: mining exploration companies seeking faster core characterization and reduced wasted drilling cycles; active mining operations seeking real-time ore grade visibility for blending and processing decisions; and tailings/waste management teams re-evaluating previously processed material. Named enterprise customers and partners include Scout Discoveries (gold exploration in the Western USA, used for field validation) and TerraCore (a global hyperspectral imaging leader distributing the integrated biosensor-plus-hyperspectral system across its installed base of mining customers).

The business model is B2B enterprise field sales: the company engages mining operators directly, through partnerships, and at industry events (PDAC 2026, Capitol Hill Senate reception). Revenue is generated through biosensor measurement services and tools for exploration and operations, though specific pricing is not publicly disclosed. The company has been primarily funded by non-dilutive government contracts—$1M from DARPA Biotechnology Office and $2M from DOE ARPA-E (in partnership with TerraCore and MIT)—supplemented by a $5M seed round in May 2025 led by Ubiquity Ventures with LDV Capital and E14 Fund. The company is headquartered in Woburn, Massachusetts with a 14-person team spanning synthetic biology, strain engineering, hyperspectral data processing, AI, geology, and business development.

Name

Fieldstone Bio

Legal name

Fieldstone Bio

Website

https://fieldstone.bio

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

11–50 employees

Short description

Fieldstone Bio is an MIT spinout that combines engineered microbial biosensors with hyperspectral imaging and AI to detect critical minerals like gold, copper, and arsenic on drill cores for mining exploration and operations companies, delivering parts-per-billion sensitivity in hours rather than weeks.

Ownership category

akta.pro rank

Product category

Mineral Exploration Technology

NAICS

Analytical Laboratory Instrument Manufacturing (334516), Research and Development in Biotechnology (except Nanobiotechnology) (541714)

SIC

Laboratory Analytical Instruments (3826), Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Biosensors & Lab-on-Chip (BioMEMS) (HDAHALAK)

akta.pro secondary industries

Microbiome Diagnostics & Biomarker Platforms (gut/skin/oral/vaginal) (HLAAAFAH), Scientific Data Management & Data Platforms (SDMS/Data Lakehouse for R&D) (HLAGAJAC)

Keywords

• Critical mineral detection
• Microbial biosensor technology
• Mining exploration services
• Hyperspectral imaging analysis
• Synthetic biology sensors

Headquarters

HQ city

Woburn

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations

Revenue model

1. Biosensor Measurement Services / Tools: Fieldstone provides measurement tools and services to mining companies for critical mineral detection on drill cores, soil samples, and tailings. Revenue is generated through the sale or deployment of sensors and associated analysis services for exploration and mining operations.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Fieldstone Bio develops and deploys engineered microbial biosensors combined with hyperspectral imaging and AI-driven analysis for rapid, on-site detection of critical minerals on drill cores, soil samples, and tailings. The platform delivers parts-per-billion sensitivity and same-day results, enabling mining and exploration teams to make faster decisions across exploration, operations, and tailings management without requiring new hardware or workflow changes.

Product overview

Fieldstone Bio offers a unified platform combining engineered microbial biosensors with hyperspectral imaging and AI-driven analysis for critical mineral detection in the mining industry. The core offering consists of Fieldstone Sensors (engineered microbes applied to drill cores, soil samples, or tailings that produce optically readable signals upon detecting target metals) working in conjunction with the Sensing Library (sensors for gold, copper, arsenic currently available, with silver, molybdenum, nickel, and rare earth elements in development) and the Fieldstone Analysis Platform (hyperspectral imaging and AI system that converts biosensor signals into quantitative, high-resolution mineral distribution maps). The platform delivers parts-per-billion sensitivity detection with same-day results, enabling exploration and mining teams to make faster, data-driven decisions across the mining lifecycle from early exploration through operations and tailings management.

Differentiator

Problem solved

Functional benefit

Products and services

• Fieldstone Sensors Engineered microbial biosensors that produce distinct, optically readable signals when they sense target metals such as gold, copper, and arsenic. Applied directly to drill cores, soil samples, or tailings within standard core-handling workflows, enabling field-deployable critical mineral detection.
• Sensing Library A library of engineered biosensors designed to identify specific chemical targets and translate them into high-resolution mapped outputs. Currently includes sensors for gold (Au), copper (Cu), and arsenic (As); in development for silver (Ag), molybdenum (Mo), nickel (Ni), and rare earth elements.
• Fieldstone Analysis Platform Integrated system combining hyperspectral imaging capture and AI-driven analysis that translates biosensor signals into quantitative, high-resolution maps of metal distribution along drill cores. Delivers results in hours rather than weeks compared to conventional lab assays such as fire assay or ICP-MS.

Quantifiable outcome

• Assay time reduced from weeks/months to hours for drill core mineral characterization
• +3 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature5 records

Partnerships

Three partnerships are on record, tiered core.

• TerraCorecoreTechnology or Integration · 23 June 2026TerraCore is a global hyperspectral imaging leader with experience spanning six continents, every major mineral commodity, and more than two million meters of core analyzed. Under the ARPA-E ROCKS program, TerraCore provides hyperspectral imaging hardware and geological expertise to integrate with Fieldstone's biosensor layer, creating a combined system for rapid drill core characterization without requiring mining teams to change their existing hardware or workflows.
• Scout DiscoveriescoreStrategic or Co-development Partner · 23 June 2026Scout Discoveries is an exploration company advancing new targets across the Western USA, including gold. Under the ARPA-E program, Scout Discoveries contributes active drill sites and fresh core to validate Fieldstone's technology under real-world field conditions, providing the operational environment to prove the system's performance.
• MIT / Dr. Christopher Voigt LabcoreTechnology or IntegrationFieldstone licensed the engineered reporter technology from MIT's Dr. Christopher Voigt lab. The technology enables microbial signals to be read remotely by hyperspectral imaging cameras, published in Nature Biotechnology (2025). Dr. Voigt (Head of MIT's Department of Biological Engineering) is a co-founder of Fieldstone Bio and continues as a scientific advisor.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Corescan: Corescan provides hyperspectral mineralogical analysis of drill core and chip samples to mining and exploration customers globally. It is directly comparable to Fieldstone because both use hyperspectral imaging on drill core to generate decision-ready mineral maps for mining customers, though Corescan relies on mineralogy proxies rather than microbial biosensors.
• KoBold Metals: KoBold Metals applies AI and data science to critical mineral exploration, combining proprietary models with drilling programs targeting copper, lithium, nickel, and cobalt. It is comparable to Fieldstone because both target rapid, data-driven decision-making in critical minerals exploration, though KoBold focuses on geological AI rather than measurement chemistry.
• GoldSpot Discoveries: GoldSpot Discoveries applies machine learning and data analytics to mineral exploration targeting for mining clients. It is comparable to Fieldstone as a tech-forward exploration services firm serving similar mining customers with AI-driven analysis, though GoldSpot focuses on geological target generation rather than core-scale measurement.
• GeologicAI: GeologicAI combines AI with multi-sensor core scanning (hyperspectral, XRF, etc.) to characterize mineralogy and geochemistry of drill core for mining clients. It is comparable to Fieldstone because both target high-resolution, rapid core characterization at the exploration site, although GeologicAI's modality set is sensor-heavy rather than biology-based.
• Minerva Intelligence: Minerva Intelligence applies AI to mineral deposit targeting and knowledge management for mining exploration. It is comparable to Fieldstone as a software/AI-driven exploration-services provider serving similar mining customers with the goal of faster, better-targeted drilling decisions.

Broad incumbents

• TerraCore: TerraCore is a global hyperspectral imaging services provider to mining with experience across six continents and 2+ million meters of core analyzed. It is comparable to Fieldstone as the established hyperspectral platform that Fieldstone's biosensors integrate with, and serves overlapping mining exploration customers.
• ALS Global: ALS Global is one of the world's largest geochemistry and assay service providers, including fire assay and ICP-MS, to mining and exploration customers. It is comparable to Fieldstone as the incumbent analytical-services provider whose slow, lab-based workflows Fieldstone explicitly seeks to displace.
• SGS Natural Resources: SGS provides mineral exploration and assaying laboratory services globally, including geochemical analysis of drill core and chip samples. It is comparable to Fieldstone as a major incumbent assay and lab-services incumbent whose workflow Fieldstone's biosensor platform is positioned to compress from weeks to hours.

Emerging players

• Impossible Sensing: Impossible Sensing develops photonic and laser-based sensing technologies for environmental and resource applications. It is comparable to Fieldstone as an emerging deep-tech sensing platform, though its modality is laser spectroscopy rather than engineered microbial biosensors.
• Binding Biosciences: Binding Biosciences is an early-stage synthetic biology company developing engineered microbial platforms for industrial and resource applications. It is comparable to Fieldstone as a synthetic-biology peer building programmable microbial tools, although Binding Biosciences' application focus is broader than Fieldstone's mining-sensor specialization.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/fieldstone-bio

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds1 record

Investors3 records

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M&A

Investments

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

Frequently asked questions about Fieldstone Bio