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.
| Element | Mg | Si | Fe | Ca | Cr | Mn | Al | Ni | V |
|---|---|---|---|---|---|---|---|---|---|
| Composition (% w/w) | 24.01 ± 0.19 | 18.92 ± 0.03 | 7.65 ± 0.02 | 0.98 ± 0.01 | 0.62 ± 0.01 | 0.12 ± 0.01 | 0.42 ± 0.02 | 0.335 ± 0.02 | 0.200 ± 0.001 |
Reported values are for elements with concentration >0.1%.
