Minrecordite
A valid IMA mineral species
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About Minrecordite
Mineralogical Record logo
Formula:
CaZn(CO3)2
Colour:
White, colourless
Lustre:
Pearly
Hardness:
3½ - 4
Specific Gravity:
3.45
Crystal System:
Trigonal
Member of:
Name:
Named for the Mineralogical Record, a magazine started in 1970 by John White (whiteite). It is the authoritative English language magazine for mineral collectors, with articles detailing worldwide localitities, fine minerals and collections, and the history of mineral collecting. The named was for the Mineralogical Record being "a worthy magazine in promoting both a better knowledge of Tsumeb minerals and a more beneficial interaction between professional and amateur mineralogists."
Unique Identifiers
Mindat ID:
2723
Long-form identifier:
mindat:1:1:2723:2
GUID
(UUID V4):
(UUID V4):
87e1b8c0-328c-4ba6-9006-aec1a1c72e2d
IMA Classification of Minrecordite
Approved
Approval year:
1981
First published:
1982
Classification of Minrecordite
5.AB.10
5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
B : Alkali-earth (and other M2+) carbonates
5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
B : Alkali-earth (and other M2+) carbonates
14.2.1.4
14 : ANHYDROUS NORMAL CARBONATES
2 : AB(XO3)2
14 : ANHYDROUS NORMAL CARBONATES
2 : AB(XO3)2
11.6.7
11 : Carbonates
6 : Carbonates of Zn and Cd
11 : Carbonates
6 : Carbonates of Zn and Cd
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Mrd | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Minrecordite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Minrecordite
Pearly
Transparency:
Translucent
Colour:
White, colourless
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Cleavage:
Very Good
on {1014}
on {1014}
Density:
3.45(2) g/cm3 (Measured) 3.445 g/cm3 (Calculated)
Optical Data of Minrecordite
Type:
Uniaxial (-)
RI values:
nω = 1.734 - 1.750 nε = 1.542 - 1.550
Max Birefringence:
δ = 0.192 - 0.200
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemistry of Minrecordite
Mindat Formula:
CaZn(CO3)2
Elements listed:
Crystallography of Minrecordite
Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 4.8183(4) Å, c = 16.0296(10) Å
Ratio:
a:c = 1 : 3.327
Unit Cell V:
322.29 ų (Calculated from Unit Cell)
Morphology:
Mosaic rhombohedral crystals to 0.5mm. Saddle-shaped, strongly twisted.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.890 Å | (100) |
| 1.789 Å | (40) |
| 1.806 Å | (33) |
| 2.410 Å | (25) |
| 3.701 Å | (20) |
| 2.196 Å | (20) |
| 2.019 Å | (15) |
Comments:
Tsumeb, Namibia. Data from the type description. Pattern is similar to that of dolomite.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) |
Type Occurrence of Minrecordite
General Appearance of Type Material:
Small, strongly twisted rhombohedral crystals.
Place of Conservation of Type Material:
Institute of Mineralogy, Bari University, Bari, Italy.
Geological Setting of Type Material:
Hydrothermal polymetallic deposit.
Associated Minerals at Type Locality:
Reference:
Garavelli, C.G., Vurro, F., Fioravanti, G.C. (1982) Minrecordite a new mineral from Tsumeb. The Mineralogical Record: 13: 131-136.
Synonyms of Minrecordite
Other Language Names for Minrecordite
Relationship of Minrecordite to other Species
Member of:
Other Members of this group:
| Ankerite | Ca(Fe2+,Mg)(CO3)2 | Trig. 3 : R3 |
| Dolomite | CaMg(CO3)2 | Trig. 3 : R3 |
| Kutnohorite | CaMn2+(CO3)2 | Trig. 3 : R3 |
| Norsethite | BaMg(CO3)2 | Trig. 3 2 : R3 2 |
| Škáchaite | CaCo(CO3)2 | Trig. 3 : R3 |
Common Associates
Associated Minerals Based on Photo Data:
| 47 photos of Minrecordite associated with Dioptase | CuSiO3 · H2O |
| 12 photos of Minrecordite associated with Duftite | PbCu(AsO4)(OH) |
| 8 photos of Minrecordite associated with Cerussite | PbCO3 |
| 7 photos of Minrecordite associated with Calcite | CaCO3 |
| 5 photos of Minrecordite associated with Malachite | Cu2(CO3)(OH)2 |
| 4 photos of Minrecordite associated with Otavite | CdCO3 |
| 3 photos of Minrecordite associated with Mimetite | Pb5(AsO4)3Cl |
| 3 photos of Minrecordite associated with Goethite | α-Fe3+O(OH) |
| 3 photos of Minrecordite associated with Smithsonite | ZnCO3 |
| 3 photos of Minrecordite associated with Rosasite | (Cu,Zn)2(CO3)(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 5.AB.05 | Calcite | CaCO3 |
| 5.AB.05 | Gaspéite | NiCO3 |
| 5.AB.05 | Magnesite | MgCO3 |
| 5.AB.05 | Otavite | CdCO3 |
| 5.AB.05 | Rhodochrosite | MnCO3 |
| 5.AB.05 | Siderite | FeCO3 |
| 5.AB.05 | Smithsonite | ZnCO3 |
| 5.AB.05 | Spherocobaltite | CoCO3 |
| 5.AB.05 va | Parakutnohorite | |
| 5.AB.10 | Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| 5.AB.10 | Dolomite | CaMg(CO3)2 |
| 5.AB.10 | Kutnohorite | CaMn2+(CO3)2 |
| 5.AB.10 | Škáchaite | CaCo(CO3)2 |
| 5.AB.15 | Aragonite | CaCO3 |
| 5.AB.15 | Cerussite | PbCO3 |
| 5.AB.15 | Strontianite | SrCO3 |
| 5.AB.15 | Witherite | BaCO3 |
| 5.AB.20 | Vaterite | CaCO3 |
| 5.AB.25 | Huntite | CaMg3(CO3)4 |
| 5.AB.30 | Norsethite | BaMg(CO3)2 |
| 5.AB.35 | Alstonite | BaCa(CO3)2 |
| 5.AB.40 | Olekminskite | Sr(Sr,Ca,Ba)(CO3)2 |
| 5.AB.40 | Paralstonite | BaCa(CO3)2 |
| 5.AB.45 | Barytocalcite | BaCa(CO3)2 |
| 5.AB.50 | Carbocernaite | (Ca,Na)(Sr,Ce,Ba)(CO3)2 |
| 5.AB.55 | Benstonite | Ba6Ca6Mg(CO3)13 |
| 5.AB.60 | Juangodoyite | Na2Cu(CO3)2 |
Fluorescence of Minrecordite
Not fluorescent.
Other Information
Notes:
Very slowly soluble in cold dilute HCl. Easily soluble in 2N HCl at 80° C.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Minrecordite
mindat.org URL:
https://www.mindat.org/min-2723.html
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Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Minrecordite
Localities for Minrecordite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Algeria | |
| Belhai et al. (2012, March) |
Canada | |
| Bamburak et al. (parts of NTS 62N1, 16, 63C1) +1 other reference |
Czech Republic | |
| Sejkora et al. (2024) |
Ireland | |
| Kucha et al. (1984) +1 other reference |
Mexico | |
| J.R. de Wet and J.D. Singleton (2008) |
Namibia (TL) | |
| Garavelli et al. (1982) |
Peru | |
| 7th Biennial |
Poland | |
| J. Cabala et al. (2008) |
| Cabała +4 other references |
Portugal | |
| Pimentel et al. (2007) |
USA | |
| Roadcap et al. (2005) |
| WALTER (2011) |
| Marty et al. (1993) |
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Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia