sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Hardness: 7 Mohs scale. Color: greyish-black with a waxy luster. Conchoidal fracture (smooth, curved breaks). Opaque to translucent edges. High specific gravity (2.65).

Hardness: 7 Mohs scale
Color: greyish-black with a waxy luster

Identified July 7, 2026More sedimentary →

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Physical properties

Hardness: 7 Mohs scale. Color: greyish-black with a waxy luster. Conchoidal fracture (smooth, curved breaks). Opaque to translucent edges. High specific gravity (2.65).

Formation & geological history

Forms through the accumulation of silica-rich organic remains or chemical precipitation in sedimentary basins. The location (near Antalya, Turkey) contains extensive Mesozoic limestone formations where chert nodules commonly develop within carbonate beds.

Uses & applications

Historically used for stone tools (knapping). Currently used as a gemstone (common jasper/chert varieties), in landscaping, and sometimes as an additive in construction materials.

Geological facts

Flint is a variety of chert that was essential to human survival for millennia due to its ability to produce sharp edges and sparks when struck with steel or iron pyrite.

Field identification & locations

Check for shell-like (conchoidal) fractures and the ability to scratch glass. Found frequently as nodules or layers in limestone or chalk. Commonly found on beaches or in mountain riverbeds in the Antalya region.