Minrecordite

{{Infobox mineral|boxwidth=|name=Minrecordite|image=Minrecordite and Dioptase - Tsumeb Mine, Namibia.jpg|imagesize=260px|caption=|category=Carbonate minerals Dolomite group|formula=CaZn(CO₃)₂| IMAsymbol = Mrd{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|url=https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A|journal=Mineralogical Magazine|volume=85|issue=3 |pages=291–320|doi=10.1180/mgm.2021.43 |bibcode=2021MinM...85..291W |s2cid=235729616 |doi-access=free}}|strunz=5.AB.10|system=Trigonal|class={{overline|3}} Rhomboehedral|symmetry=|color=White, colourless|habit=Typically rhombohedral crystals saddle-shaped, twisted|twinning=|cleavage=Very good on [10-14]|fracture=|mohs=3.5–4|luster=Pearly|opticalprop=|refractive=|birefringence=|pleochroism=|streak=White|gravity=3.45|melt=|fusibility=|diagnostic=|solubility=|diaphaneity=Translucent|other=|references=http://rruff.geo.arizona.edu/doclib/hom/minrecordite.pdf Mineral Handbookhttps://www.mindat.org/min-2723.html Mindathttp://webmineral.com/data/minrecordite.shtml Webmineral}}

Minrecordite, CaZn(CO₃)₂, is a very rare mineral belonging to the dolomite group, the member with Ca and Zn. It was discovered, associated with dioptase, in a specimen from the Tsumeb mine (Namibia), which is consequently its type locality. Its name is a tribute to The Mineralogical Record magazine, representing the collaboration between professional and amateur mineralogists.{{Cite journal|last=Garavelli|first=Carlo G.|last2=Vurro|first2=Filippo|last3=Fioravanti|first3=Gian Carlo|date=1982|title=Minrecordite, a new mineral from Tsumeb|journal=The Mineralogical Record|volume=13|pages=131–136}} In this locality it is associated primarily with dioptase, and less frequently with duftite, calcite and malachite.{{Cite web|url=https://www.mindat.org/min-2723.html|title=Minrecordite|website=Mindat|access-date=4 September 2019}} It is a rare mineral, which has been found only in a few deposits in the world. In addition to the type locality, it appears in the Preguiça mine, in Moura, district of Beja (Portugal).{{Cite journal|last=Pimentel|first=R.|last2=Nunes|first2=R.|last3=De Ascenção|name-list-style=amp|first3= R.|date=2007|title=Les minéraux d'altération de plomb (Pb) et zinc (Zn) du massif de Preguiça, Moura, Portugal|journal=Le Regne Mineral|volume=75|pages=19–26}}