ˈ ̷ ̷ˌ ̷ ̷ noun
: the mineral siderite when occurring mixed with clay, sand, and considerable carbonaceous matter and frequently being associated with coal
ˈ ̷ ̷ˌ ̷ ̷ noun
: the mineral siderite when occurring mixed with clay, sand, and considerable carbonaceous matter and frequently being associated with coal
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012