Mineralogical Magazine is very grateful to the following who gave of their time and expertise to act as referees and Editors for manuscripts submitted for publication during 2021.

• Rainer Abart

• Masahide Akasaka

• Zahra Alaminia

• Alan Anderson

• Marcelo B Andrade

• Michael Anenburg

• Tohru Araki

• Makoto Arima

• Daniel Atencio

• Pina Balassone

• Isabel Barton

• Vladimir BermanecFootnote ^†

• Cristian Biagioni

• Luca Bindi

• Iuliu Bobos

• Hans-Peter Bojar

• Paola Bonazzi

• Ferdinando Bosi

• Nedjima Bouzidi

• Sergey Britvin

• Sam Broom-Fendley

• Joel Brugger

• Casey Bryce

• Peter C Burns

• Alexandre R Cabral

• Louis J Cabri

• Fernando Cámara

• Francesco Capitelli

• Aniket Chakrabarty

• Dmitry Charkin

• Christian Chopin

• Priyadarshi Chowdhury

• George Christidis

• Andrew G Christy

• Nikita V Chukanov

• Fernando Colombo

• Ian Coulson

• Nigel Cook

• Mark A Cooper

• Pedro Cordeiro

• Claire L Corkhill

• Alessandra Costanzo

• Simon Cuthbert

• Monica Dapiaggi

• Eimear Deady

• Giancarlo Della Ventura

• Francesco Demartin

• Francesco Di Benedetto

• Yiran Dong

• Herta Effenberger

• Andreas Ertl

• Béla Fehér

• Cristiano Ferraris

• Giovanni Ferraris

• Shannon Flynn

• Henrik Friis

• Junichi Fukuda

• Evgeny V Galuskin

• Irina O Galuskina

• Anna Garavelli

• Nicholas Gardiner

• G. Diego Gatta

• Teodoro Gauzzi

• Sean Gaynor

• Charles A Geiger

• Carlotta Giacobbe

• R. Johannes Giebel

• John Gittins

• David John Good

• Mário Gonçalves

• Jens Götze

• Ian Terence Graham

• Geoff Grantham

• Klaus-Dieter Grevel

• Edward Sturgis Grew

• Ian Grey

• Vincenza Guarino

• Alessandro Guastoni

• Huaming Guo

• Ulf Hålenius

• Maki Hamada

• Jihua Hao

• Chris Harris

• Jason Harvey

• Darrell Henry

• David Hibbs

• Dan Holtstam

• Mihoko Hoshino

• John Hughes

• Moha Ikenne

• Xu Jie

• Anthony R Kampf

• Oxana V Karimova

• Anatoly V Kasatkin

• Graham King

• Simon Kocher

• Uwe Kolitsch

• Vladimir A Kovalenker

• Elizaveta Kovaleva

• Sergey V Krivovichev

• Monika Kusiak

• František Laufek

• Martin Lee

• Christian Lengauer

• Peter Leverett

• Yang Li

• Yue Li

• Jing Liu

• Juan Liu

• Werner Lottermoser

• Clara Magalhães

• Juraj Majzlan

• Emil Makovicky

• Andrade Barbosa Marcelo

• JC Melgarejo

• Leone Melluso

• Stefano Merlino

• Boriana Mihailova

• Stuart Mills

• Owen Peter Missen

• Ritsuro Miyawaki

• Yves Moelo

• Koichi Momma

• Juraj Majzlan

• Marilena Moroni

• Terry Moxon

• Thomas Mueller

• Janet Muhling

• Mariko Nagashima

• Fabrizio Nestola

• Laura Newsome

• Thomas Oberthuer

• Hüseyin Öztürk

• Supratim Pal

• Marco Pasero

• Richard Pazout

• Igor V Pekov

• Igor S Peretyazhko

• Claudio Perottoni

• Katharina Pfaff

• Jakub Plašil

• Wayne Powell

• Jonathan Pownall

• Dmitry Yu Pushcharovsky

• Andrew Putnis

• Francesco Radica

• Jan Rohlicek

• George R Rossman

• Michael Rumsey

• Fernando Sardi

• Bruno Scaillet

• Jochen Schlüter

• John Schumacher

• Andrey P Shablinskii

• Victor V Sharygin

• Jeremiah Shuster

• Oleg I Siidra

• Vartan Simmonds

• Roman Skála

• Armida Sodo

• Elena Sokolova

• Gordon Southam

• Paul G Spry

• Marcin Stachowicz

• Chris Stanley

• Martin Števko

• Francesco Stoppa

• Craig Storey

• Sándor Szakáll

• Mihail Tarassov

• Giacchino Tempesta

• Rainer Thomas

• Nadezhda Tolstykh

• Mario Tribaudino

• Tatsuki Tsujimori

• Pavel Uher

• Gennaro Ventruti

• Silvio R Vlach

• Panagiotis C Voudouris

• Frances Wall

• Benjamin Walter

• Hejing Wang

• Mark D Welch

• Susan Welch

• Maria Wierzbicka-Wieczorek

• Patrick Woodward

• Haijun Xu

• Hexiong Yang

• Federica Zaccarini

• Anatoly Zaitsev

• Elena Zhitova

• Mei-Fu Zhou

• Runliang Zhu