Morphological aspects of some symmetrical ammonium hydrogen tartrate crystals grown by silica gel technique

Ammonium hydrogen tartrate single crystals have been prepared by the reaction of NH₄Cl and tartaric acid in silica gel. The morphology of some as-grown symmetrical crystals has been studied by optical microscopy. The growth morphology studies indicate that the grown crystals are needle-shaped, orthorhombic disphenoidal and tetrahedral disphenoidal. The growth mechanism has been assessed.