noun
definition
A widespread brown mineral, FeCO3, having the structure of calcite
definition
An iron meteorite
definition
An indigo-blue variety of quartz.
definition
Magnetic iron ore; lodestone
Examples of siderite in a Sentence
They are four important iron ores, magnetite, haematite, limonite and siderite, and one of less but still considerable importance, pyrite or pyrites.
Siderite, or spathic iron ore, FeCO 3, crystallizes in the rhombohedral system and contains 48.28% of iron.
The clayey siderite of the British coal measures is called " clay band," and that containing bituminous matter is called " black band."
About two-thirds of the ore mined is clayey siderite.
The most important British ore deposit is the Lower Cleveland bed of oolitic siderite in the Middle Lias, near Middlesborough.
The larger part of Lorraine belongs to France, but the German part nossesses great mineral wealth in its rich layers of ironstone (siderite) and in the coal-fields of the Saar.
Siderite nodules from the Coseley fossil assemblage contain an abundant, diverse, and well preserved coal measures flora.