Gortdrumite is a rare mineral that belongs to the phosphate mineral group. It has a chemical formula of (Ni,Fe,Cu)3(AsO4)2·8H2O, indicating its composition of nickel, iron, copper, arsenic, and water molecules. It was named after its type locality in Gortdrum, Ireland, where it was first discovered.
This mineral typically occurs in cavities and fractures of hydrothermal veins, which are formed by the transfer of hot fluids through rocks. Gortdrumite usually forms as small, translucent to transparent crystals, often exhibiting a bluish-green color. It is commonly associated with other minerals such as arseniosiderite, annabergite, and erythrite.
The physical properties of gortdrumite include a Mohs hardness of 2.5 to 3, indicating its relatively soft nature, and a specific gravity of approximately 2.9 to 3.1. It possesses a monoclinic crystal system, which means its crystal structure is characterized by three unequal axes and angles that are not 90 degrees.
Due to its rarity and limited occurrence, gortdrumite does not have any significant industrial or economic uses. However, it is highly sought after by mineral collectors and enthusiasts due to its distinctive crystal habits and vibrant color. Its presence can provide valuable insights and information about the geological processes and conditions in which it forms.
