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Journal of Palaeogeography
Fig. 5 | Journal of Palaeogeography

Fig. 5

From: Characteristics and origin of a new type of polyhalite potassium ore in the Lower Triassic Jialingjiang Formation, Puguang area, northeastern Sichuan Basin, SW China

Fig. 5

Distribution characteristics of polyhalite in different kinds of halite matrix. a Fine-grained polyhalite distributed in the primary halite layers in black halite; b Fine-grained polyhalite distributed in black halite; c Banded polyhalite distributed in black halite; d A large polyhalite lump distributed in pure black halite; e Medium-grained polyhalite distributed in red halite; f A large polyhalite lump in red halite; g Thin polyhalite-rich layer interbedded with a halite layer. a–d Well ZK001; e–g Well HC3. H = Halite; Pol = Polyhalite

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