Definition

1. Noun:
   • A meteorite consisting principally of nickel and iron: A type of meteorite that is primarily composed of metallic iron-nickel alloys.
   • Iron ore in the form of ferrous carbonate: A brownish mineral (FeCO₃) that is an important source of iron.

Usage Examples

• Noun (Meteorite):
  • The museum's new acquisition is a rare siderite, a metallic meteorite.
  • Scientists analyzed the siderite to learn about the composition of asteroids.
• Noun (Mineral):
  • The miners extracted siderite from the sedimentary deposit.
  • This banded iron formation contains layers of siderite and hematite.

Advanced Usage

• The term is used in specialized fields like planetary science and economic geology. In planetary science, it classifies a specific type of stony-iron meteorite. In geology, it identifies a specific carbonate mineral and ore.

Variants and Related Words

• Sideritic (adj): Relating to or containing siderite.
  • The sideritic nodules were clearly visible in the rock sample.

Different Meanings

1. Astronomical Object: A meteorite with a high metallic content.
2. Geological Mineral: A specific iron carbonate mineral (FeCO₃), also known as chalybite.

Synonyms

• For the meteorite: Iron meteorite, metallic meteorite.
• For the mineral: Chalybite, spathic iron.

Related Terms

• Pallasite: Another class of stony-iron meteorite.
• Limonite: A hydrous iron oxide ore, often formed from the weathering of siderite.
• Siderophore: (Biology) A different term; compounds secreted by organisms to acquire iron.

Noun

1. a meteorite consisting principally of nickel and iron
2. iron ore in the form of ferrous carbonate