As a public health precaution due to COVID-19, all Smithsonian museums are temporarily closed. We are not announcing a reopening date at this time and will provide updates on our websites and social media.
**Although we are currently taking requests, we are unable to ship the reference materials at this time and do not expect shipments to resume for several months.**
Mineral Sciences provides reference materials to help scientists calibrate instruments and monitor the quality of analyses. Smithsonian reference materials are used in laboratories worldwide and fill a vital need in the scientific community.
The following reference materials are currently available: