Index
Legal Hub
One page listing every Lodestone legal document, its public address, and its effective date.
Open the Legal Hub
Android Application
Lodestone
An offline-first geological atlas for Android. Explore more than 300,000 mineral occurrence records compiled by the U.S. Geological Survey, filter them by commodity, and study their distribution as points, clusters, density grids, and heatmaps — directly on your device, with no connection needed once the data is downloaded.
Field Notice
Land access & mineral rights: Lodestone provides geological information for reference and study. It does not grant, convey, or verify permission to enter any land, and it does not grant mineral rights, mining claims, or collecting permissions. Always confirm ownership, access rights, and local rules before visiting a site.
Legal Documents
Read the documents that will govern Lodestone, or start from the legal hub:
Effective October 14, 2026
Privacy Policy
How Lodestone handles device location, data stored on your phone, downloads from data.lodestone-explorer.com, and the map services the app connects to.
Read the Privacy PolicyEffective October 14, 2026
Terms of Service
Permitted use of the app, the limits of geological data, field safety, land access, third-party data, and liability.
Read the Terms of ServiceWhat Lodestone Does
Built to stay useful when you are off the cellular grid.
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Mineral Occurrences, Offline
A one-time download of about 510 MB puts USGS mineral occurrence records (MRDS and USMIN) on your device. Filter by more than 130 commodities and pin your favorites; every search runs locally.
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Faults & Energy Layers
Quaternary fault lines ship with the app and work offline. Utah coal deposit areas and oil & gas fields can be shown online from public state agency services.
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Public Survey Data
Built on public geological data from the U.S. Geological Survey and Utah state agencies, over the USGS National Map topographic basemap. The basemap needs a connection; areas you have already viewed are cached on the device.
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Privacy Respectful
No account, no advertising, and no analytics or crash-reporting SDKs. Location is optional, used only while the app is open, and never sent anywhere by Lodestone.
About Day of Flight Studios
Lodestone is developed and published by Day of Flight Studios, an independent developer of focused, durable tools for earth science enthusiasts, geologists, and outdoor researchers.
Contact: lodestone.explorer@gmail.com