Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

    • 3D shape and size data for 10084 and 14163 lunar regolith particles

    Metadata Updated: September 30, 2025

    This database contains 3D shape and size data for 10084 (Apollo 11) and 14163 (Apollo 14) real lunar regolith particles, along with STL files for the approximately 14,000 particles studied via X-ray micro-CT and X-ray nano-CT. The database also contains similar information for the lunar regolith simulant JSC-1A but for over 100,000 particles. There are also images for all 10084 and 14163 particles examined by SEM, which are different particles out of the same material. Each particle studied in 3D, ranging in size from 0.5 micrometers to 100 micrometers, has length, width, thickness, surface area, and volume measured. The directionally-averaged projected area is also computed. The dataset contains a 3D STL file for each particle that was studied by X-ray CT. There are files describing the data structure of each kind of data file.Note: The large image-stack files have been compressed using the Linux gzip app, which adds a ".gz" extension after the file's extension. Free apps such as 7zip are able to uncompress these files or the Linux app gunzip can be used. All data files (.dat, .txt, .mic) are in ASCII format when they are uncompressed.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date September 30, 2025
    Metadata Updated Date September 30, 2025

    Metadata Source

    Harvested from Commerce Non Spatial Data.json Harvest Source

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 30, 2025
    Metadata Updated Date September 30, 2025
    Publisher National Institute of Standards and Technology
    Maintainer
    Identifier ark:/88434/mds2-3043
    Data First Published 2024-01-18
    Language en
    Data Last Modified 2024-01-16 00:00:00
    Category Materials:Materials characterization
    Public Access Level public
    Bureau Code 006:55
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 2240404c-9050-49ef-82b5-137d29d1f8c8
    Harvest Source Id bce99b55-29c1-47be-b214-b8e71e9180b1
    Harvest Source Title Commerce Non Spatial Data.json Harvest Source
    Homepage URL https://data.nist.gov/od/id/mds2-3043
    License https://www.nist.gov/open/license
    Program Code 006:045
    Source Datajson Identifier True
    Source Hash 0482f91233bcc4d0a1e8c2e05539f2a0f0f448fbe2427158b7428e7076788d26
    Source Schema Version 1.1

    Didn't find what you're looking for? Suggest a dataset here.