Tangdanite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Tangdanite
Formula:
Ca2Cu9(AsO4)4(SO4)0.5(OH)9 · 9H2O
Colour:
emerald green
Lustre:
Silky, Pearly
Hardness:
2 - 2½
Specific Gravity:
3.22
Crystal System:
Monoclinic
Name:
Named after the type locality.
Closely related to tyrolite (that contains no sulphate, but carbonate instead). In fact, the space group is identical with and the unit-cell parameters are very close to those of the 2M-polytype of tyrolite (C2/c; a = 54.520(6), b = 5.5638(6), c = 10.4647(10) Å, beta = 96.432(9)°; Krivovichev et al., 2006). The "clinotyrolite" was discredited, as it was shown to be identical with tangdanite.
Note: The originally proposed name "fuxiaotuite" (after Fu Xiaotu, Jeffrey de Fourestier's chinese name) was later withdrawn and the species was then named tangdanite after the type locality (IMA No. 2011-096).
Unique combination of elements (the only Ca-Cu arsenate-sulphate mineral known).
Note: The originally proposed name "fuxiaotuite" (after Fu Xiaotu, Jeffrey de Fourestier's chinese name) was later withdrawn and the species was then named tangdanite after the type locality (IMA No. 2011-096).
Unique combination of elements (the only Ca-Cu arsenate-sulphate mineral known).
Unique Identifiers
Mindat ID:
42724
Long-form identifier:
mindat:1:1:42724:9
GUID
(UUID V4):
(UUID V4):
24fc109e-1817-4d54-936b-042a8f1c94c9
IMA Classification of Tangdanite
Classification of Tangdanite
8.DM.10
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
M : With large and medium-sized cations, (OH, etc.):RO4 > 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
M : With large and medium-sized cations, (OH, etc.):RO4 > 2:1
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 |
---|---|---|
Tdn | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Tangdanite
Silky, Pearly
Transparency:
Translucent
Colour:
emerald green
Streak:
light green
Hardness:
2 - 2½ on Mohs scale
Hardness:
VHN50=42.0 - 43.6 kg/mm2 - Vickers
Tenacity:
Sectile
Cleavage:
Perfect
{100}
{100}
Parting:
not observed
Fracture:
None observed
Density:
3.22 g/cm3 (Measured) 3.32 g/cm3 (Calculated)
Comment:
meas. by pycnometry
Chemistry of Tangdanite
Mindat Formula:
Ca2Cu9(AsO4)4(SO4)0.5(OH)9 · 9H2O
Crystallography of Tangdanite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 54.490(9) Å, b = 5.5685(9) Å, c = 10.4690(17) Å
β = 96.294(3)°
β = 96.294(3)°
Ratio:
a:b:c = 9.785 : 1 : 1.88
Unit Cell V:
3157.9 ų
Z:
4
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0020184 | Tangdanite | Ma Z, Li G, Chukanov N V, Poirier G, Shi N (2014) Tangdanite, a new mineral species from the Yunnan Province, China and the discreditation of 'clinotyrolite' Mineralogical Magazine 78 559-569 | 2014 | Nanniping mine, Dongchuan district, Yunnan Province, China | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
27.08 Å | (100) |
13.54 Å | (26) |
4.801 Å | (4) |
4.738 Å | (2) |
4.387 Å | (3) |
4.308 Å | (3) |
4.246 Å | (3) |
3.501 Å | (3) |
2.840 Å | (3) |
2.669 Å | (3) |
2.637 Å | (3) |
Comments:
Very similar to the pattern of tyrolite. Calculated data (AMCSD). Comment by Uwe Kolitsch: Ma et al. (2014) list only the following values which totally neglect the high-intensity low-angle d-values: "5.263 (54), 4.782 (100), 4.333 (71), 3.949 (47), 2.976 (46), 2.631 (41), 2.368 (29), 1.744 (24)".
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Tangdanite
General Appearance of Type Material:
flaky crystals, up to 3 mm, flattened || (100) and elongated along [001], in radiating or foliated aggregates
Place of Conservation of Type Material:
Crystal Structure Laboratory, China University of Geosciences, Beijing 100083, People’s Republic of China, catalogue number TD1
Geological Setting of Type Material:
supergene, within oxidized zone (a gossan) of an As-bearing Cu sulfide deposit
Associated Minerals at Type Locality:
Synonyms of Tangdanite
Common Associates
Associated Minerals Based on Photo Data:
51 photos of Tangdanite associated with Azurite | Cu3(CO3)2(OH)2 |
12 photos of Tangdanite associated with Tyrolite | Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O |
9 photos of Tangdanite associated with Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
4 photos of Tangdanite associated with Yakhontovite | (Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2O |
3 photos of Tangdanite associated with Malachite | Cu2(CO3)(OH)2 |
3 photos of Tangdanite associated with Hemimorphite | Zn4Si2O7(OH)2 · H2O |
3 photos of Tangdanite associated with Gypsum | CaSO4 · 2H2O |
3 photos of Tangdanite associated with Quartz | SiO2 |
3 photos of Tangdanite associated with Baryte | BaSO4 |
2 photos of Tangdanite associated with Lavendulan | NaCaCu5(AsO4)4Cl · 5H2O |
Related Minerals - Strunz-mindat Grouping
8.DM. | Betpakdalite-CaMg | [Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)] |
8.DM. | Betpakdalite-FeFe | [Fe3+2 (H2O)15(OH)2Fe3+(H2O)6][Mo8As2Fe3+3O37] |
8.DM. | Penriceite | [Mg(H2O)6][Na(H2O)2Al3(PO4)2F6] · H2O |
8.DM. | Elliottite | NaMgAl3(PO4)2F6 · 9H2O |
8.DM. | Sarrochite | [Ca4(H2O)38][Mo8P2Fe3+3O37(OH)] |
8.DM. | Tomsquarryite | NaMgAl3(PO4)2(OH)6 · 8H2O |
8.DM. | Chinnerite | [Mg(H2O)6]Na(H2O)2Al3(PO4)2F6 |
8.DM.05 | Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
8.DM.05 | Esperanzaite | NaCa2Al2(AsO4)2(OH)F4 · 2H2O |
8.DM.10 | Tyrolite | Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O |
8.DM.15 | Betpakdalite-CaCa | [Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)] |
8.DM.15 | Melkovite | [Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)] |
8.DM.15 | Betpakdalite-NaCa | [Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3] |
8.DM.20 | Phosphovanadylite-Ba | Ba[V4+4P2O8(OH)8] · 12H2O |
8.DM.20 | Phosphovanadylite-Ca | Ca[V4+4P2O12(OH)4] · 12H2O |
8.DM.25 | Yukonite | Ca3Fe3+(AsO4)2(OH)3 · 5H2O |
8.DM.30 | Uduminelite | Ca3Al8(PO4)2O12 · 2H2O |
8.DM.35 | Aldermanite | [Mg(H2O)6][Na(H2O)2Al3(PO4)2(OH,F)6] · H2O |
8.DM.35 | Azovskite | Fe3+3(PO4)(OH)6 or near |
8.DM.35 | Delvauxite | CaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed |
8.DM.40 | Santafeite | (Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn4+8(VO4)16(OH,O)20 · 8H2O |
8.DM.55 | Tapiaite | Ca5Al2(AsO4)4(OH)4 · 12H2O |
8.DM.60 | Alcantarillaite | [Fe3+0.5(H2O)4][CaAs3+2(Fe3+2.5W6+0.5)(AsO4)2O7] |
Fluorescence of Tangdanite
not observed
Other Information
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 Tangdanite
mindat.org URL:
https://www.mindat.org/min-42724.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Tangdanite
Reference List:
Krivovichev, S. V., Chernyshov, D. Yu., Dobelin, N., Armbruster, Th., Kahlenberg, V., Kaindl, R., Ferraris, G., Tessadri, R., Kaltenhauser, G. (2006) Crystal chemistry and polytypism of tyrolite. American Mineralogist, 91 (8) 1378-1384 doi:10.2138/am.2006.2040
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2012) New minerals and nomenclature modifications approved in 2012. CNMNC Newsletter No 13. Mineralogical Magazine, 76 (3) 807-817 doi:10.1180/minmag.2012.076.3.26
Frost, Ray L., Xi, Yunfei, Couperthwaite, Sara J. (2012) Vibrational spectroscopic study of multianion mineral clinotyrolite Ca2Cu9[(As,S)O4]4(OH)10·10(H2O) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 95. 258-262 doi:10.1016/j.saa.2012.04.007(as clinotyrolite)
Zhesheng, Ma, Guowu, Li, Chukanov, N. V., Poirier, G., Nicheng, Shi (2014) Tangdanite, a new mineral species from the Yunnan Province, China and the discreditation of ‘clinotyrolite’. Mineralogical Magazine, 78 (3) 559-569 doi:10.1180/minmag.2014.078.3.06
Localities for Tangdanite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Austria | |
| Neschen (n.d.) |
| C.Auer (2021) |
China (TL) | |
| Williams et al. (2012) +1 other reference |
Czech Republic | |
| Škácha et al. (2019) |
France | |
| Originally described and analysed as ... +1 other reference |
Sarp et al. (2000) | |
Germany | |
| Bayerl et al. (04/21) |
| Gerstenberg et al. (2017) |
Italy | |
| Bortolozzi et al. (2017) |
| Ciriotti et al. (2019) |
| Fernando Caboni et al. (2024) |
Fernando Caboni et al. (2024) | |
| Domenico Saccardo et al. (2019) +1 other reference |
Russia | |
| Nenasheva et al. (2011) |
Slovakia | |
| Martin Števko-unpublished |
| Martin Števko-unpublished |
| Martin Števko |
| Martin Števko-unpublished |
| Martin Števko |
Spain | |
| Xavi Ortiz Collection |
| Joan Abella i Creus (Joanabellacreus@gmail.com) |
| Identified by Igor Pekov in 2012 |
CLAUDE jean marie Collection | |
USA | |
| Collection of Alex Earl |
| Jason Evans collection. |
Quick NavTopAbout TangdaniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Villahermosa del Rio, Castellón, Valencian Community, Spain