Mineral: | Spinel / Humite / Pargasite
| Chemical Formula: | MgAl2O4 / (Mg,Fe2+)7 [(F,OH)2|(SiO4)3] / NaCa2(Mg,Fe2+)4Al(Si6Al2)O22(OH)2 | Size: | | Weight: | | Transparence: | translucent - transparent | Quantity: | | Origin: | near Ah Phu village, Luc Yen ("Yuang Yang"; "Yueng Yang"), Yenbai (Yen Bai) Province, Vietnam | Here you get three spinel crystals in matrix dozens of humite crystal, some of them even undamaged with fine luster and good shape. The greenish mineral imbedded in the calcite is microcrystalline pargasite.
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