igneous

Iron-Nickel Meteorite

Siderite (Iron Meteorite), primarily Fe-Ni alloy

Hardness: 4-5 (Mohs); Color: Dark brown to black (fusion crust) or metallic silver (interior); Luster: Metallic; Crystal Structure: Isometric (Widmanstätten pattern inside); Specific Gravity: 7-8

Hardness: 4-5 (Mohs)
Luster: Metallic

Identified February 12, 2026More igneous →

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Physical properties

Hardness: 4-5 (Mohs); Color: Dark brown to black (fusion crust) or metallic silver (interior); Luster: Metallic; Crystal Structure: Isometric (Widmanstätten pattern inside); Specific Gravity: 7-8

Formation & geological history

Remnants of the molten cores of planetesimals that shattered early in the solar system's history, typically over 4.5 billion years old.

Uses & applications

Scientific research, high-end collector market, and occasionally used in custom jewelry or watch faces.

Geological facts

Iron meteorites are much rarer than stony meteorites but easier to find because they are magnetic and stand out from terrestrial rocks.

Field identification & locations

Identify by high density, strong magnetism, and a regmaglypted (thumb-printed) surface. Found globally, often in arid deserts or Antarctica where they are better preserved.

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Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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Dark Igneous Rock (Likely Basalt or Diabase)

Basalt (extrusive igneous rock) or Diabase (intrusive igneous rock - also known as Dolerite), largely composed of plagioclase feldspar, pyroxene (augite), and sometimes olivine and amphibole. Exact mineralogy would require thin section analysis.

Igneous

Magnetite

Iron(II,III) oxide (Fe3O4)

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Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

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Blue Apatite

Apatite (Group), Ca5(PO4)3(F,Cl,OH)

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Magnetite

Magnetite (Fe3O4)

mineral