How Do You Spell JANKOVICITE?

1. Jankovicite is a rare mineral that belongs to the group of phosphates. It typically appears as small, tabular crystals with a transparent to translucent appearance. The mineral is named after Branislav Janković, a Serbian mineralogist who played a significant role in the study and identification of various minerals.

   Chemically, jankovicite is classified as a hydrated copper aluminum phosphate, with the chemical formula Cu_0.9(Al, Cu)_2(PO_4)(SO_4)(OH). It usually forms in oxidized copper deposits, which are rich in phosphates and sulfates. Jankovicite often occurs in association with other secondary copper minerals, such as brochantite, malachite, and azurite.

   In terms of physical properties, jankovicite has a hardness ranging from 3 to 4 on the Mohs scale, making it relatively soft. It has a vitreous luster and can display various shades of green, ranging from light green to dark green. The mineral also exhibits perfect cleavage on {001} and is biaxial positive, displaying both birefringence and pleochroism. Jankovicite is also known for its relatively high specific gravity, ranging from 3.6 to 3.9.

   Due to its scarcity and limited occurrence, jankovicite has limited applications and is mainly valued for its aesthetic appeal among mineral collectors and enthusiasts. Its distinctive crystal shape and vibrant green color make it a sought-after addition to mineral collections worldwide.

The word "jankovicite" is derived from the surname of Serbian mineralogist Milos Janković. Janković was known for his contributions to the study of minerals, specifically the minerals found in the Špania Dolina mining district in Slovakia. The mineral "jankovicite" was named in his honor and as a recognition of his work in the field of mineralogy.