Black MAGNESIO-HASTINGSITE phenocryst in light gray volcanic matrix Black Tuesday Claim, Horse Lake Mountain Hornblende Occurence, Wenatchee Mining District, Chelan County, Washington, USA Specimen is 5.1 x 3.1 x 2.6 cm (2.0 x 1.2 x 1.0 in) Collected by Thea Stender, claim owner Photo Copyright © 2023 Jeffrey M. Schwartz
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