inesite
noun
ines·ite
ˈīnəˌsīt,
ˈin-,
-ˌzīt
plural -s
: a mineral Ca2Mn7Si10O28(OH)2.5H2O consisting of a pale red hydrous manganese calcium silicate, in small prismatic crystals or massive (hardness 6, specific gravity 3.03)
Word History
Etymology
German inesit, from Greek ines (plural of is sinew, tendon) + German -it -ite