Linked from
The 11 pages that link to Mineral identification, each with the reason it gives.
Mohs scaleRelated: Mohs designed the scale to help distinguish minerals through a simple field test.
BirefringenceRelated: Optical birefringence patterns help distinguish minerals in thin sections.
Crystal twinningRelated: Twin shapes and planes can serve as diagnostic features in minerals.
Friedrich MohsRelated: Mohs developed a systematic way to use hardness in mineral identification.