鉱 is a Japanese kanji written with 13 strokes, listed here under the keyword “mineral”. It is built from 金 (gold) and 広 (wide). In Remembering the Kanji by James W. Heisig it is frame 802.
On KumiJi Glyph Explorer, open the parts search and type “gold” + “wide”. 鉱 is among the results, together with every other character containing the same shapes.
Open 鉱 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.