The file on the new mineral richardsite in CNMNC Newsletter 55 was wrong in the ‘How to cite’ paragraph. Here is the correct version.

IMA No. 2019-136

Richardsite

Zn2CuGaS4

Merelani mines, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania

Luca Bindi and John A. Jaszczak

*E-mail: luca.bindi@unifi.it

Stannite group

Tetragonal: I

a = 5.3626(2), c = 10.5873(5) Å

3.084(100), 1.898(20), 1.882(40), 1.614(20), 1.600(10), 1.092(10)

Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Firenze, Via La Pira 4, I-50121, Firenze, Italy, catalogue number 3555/I

How to cite: Bindi, L. and Jaszczak,...

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