Hydroxylherderite

Santa Rosa Mine, Itambacuri, Vale do Rio Doce, Minas Gerais  Brazil (1978)

Specimen size: 6.4 × 5.2 × 4.3 cm = 2.52” × 2.05” × 1.69”
Main crystal size: 3.7 × 3.5 cm = 1.46” × 1.38”