Natural Crystals: Septarian Nodules Matching Pairs (Cut in Half) (Approx 3x3cm)

Septarian Nodules

Septarian nodules are geodes containing a mixture of yellow calcite, brown aragonite, grey limestone and white/clear barite.
Rock Family: Sedimentary Rock
Major Minerals: Betonite (Volcanic Ash), Brown Aragonite, Yellow Calcite
Minor Minerals: Bartite
Color: Yellow, brown, white, clear
Gravity: Varies, 2.60-2.94
Hardness: Varies, 1.5-4
Luminescence: Pink and Yellowish-white (long wave) / Blue and Blueish-white (short wave)
Texture: Concretion
Transparency: Opaque