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Tzeferisite

A valid IMA mineral species - pending publication
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05692340017272009409050.jpg
Tzeferisite, etc.

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
03737790017671366335025.jpg
Tzeferisite

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
02770150017640043516093.jpg
Tzeferisite

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
04629810017272323322080.jpg
Tzeferisite, etc.

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
03843830017665754148653.jpg
Tzeferisite

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
01499580017671366348056.jpg
Tzeferisite

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
05692340017272009409050.jpg
Tzeferisite, etc.

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
06708620017670518687984.jpg
Tzeferisite

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
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About TzeferisiteHide

02530800017272473473930.jpg
Dr. Petros Tzeferis

Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
Formula:
CaZn8(SO4)2(OH)12Cl2(H2O)9
Colour:
white, colorless
Lustre:
Vitreous
Crystal System:
Trigonal
Member of:
Namuwite Group
Name:
Named for Dr. Peter Tzeferis, General Director of the Mineral Raw Materials Directorate in the Greek Ministry of Environment and Energy, one of the driving forces in the study of Lavrion Mining District.
Known synthetic (anthropogenic) analogue: Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate).

Close to being the CaZn8-analogue of fabritzite (also known from the Lavrion area), but has more water and a slightly higher symmetry.


Unique IdentifiersHide

Mindat ID:
470605
Long-form identifier:
mindat:1:1:470605:8

Classification of TzeferisiteHide

05090920017687082464116.jpg
Gordaite-type sheet

Members of the namuwite group exhibit gordaite-type sheets.

IMA Classification of TzeferisiteHide

IMA status:
Approved, Pending publication
IMA Formula:
CaZn2+8(S6+O4)2(OH)12Cl2(H2O)9
Approval history:
IMA no. 2022-094
Strunz-mindat (2026):
7.DF.

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
TzeIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of TzeferisiteHide

Lustre:
Vitreous
Transparency:
Transparent
Colour:
White, colorless

Chemistry of TzeferisiteHide

Mindat Formula:
CaZn8(SO4)2(OH)12Cl2(H2O)9
Element Weights:
Element% weight
Zn43.865 %
O38.913 %
Cl5.947 %
S5.378 %
Ca3.361 %
H2.536 %

Calculated from ideal end-member formula.
Zn
O
Cl
S
Ca
H
Elements listed:
Ca, Cl, H, O, S, Zn - search for minerals with similar chemistry

Crystallography of TzeferisiteHide

Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3c
Setting:
R3c
Cell Parameters:
a = 8.3693(12) Å, c = 67.7943(1) Å
Ratio:
a:c = 1 : 8.1
Unit Cell V:
4,112.46 ų (Calculated from Unit Cell)
Z:
6

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.31 Å(100)
5.655 Å(40)
4.186 Å(20)
4.030 Å(20)
3.365 Å(30)
3.073 Å(20)
2.732 Å(30)
2.504 Å(35)
Locality:
Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece

Type Occurrence of TzeferisiteHide

Type Locality:
ⓘ Damianos Mine, Charvalo mines, Dimoliaki, Lavreotiki, East Attica, Attica, Greece
General Appearance of Type Material:
thin hexagonal platelets and grows up to 60μm in size
Place of Conservation of Type Material:
collections of the Natural History Museum, Burgring 7, 1010 Vienna, Austria, catalogue number O2549
Associated Minerals at Type Locality:
CalciteDolomiteFabritziteGalenaGreenockite
GypsumHemimorphiteSphalerite

Other Language Names for TzeferisiteHide

Relationship of Tzeferisite to other SpeciesHide

Member of:
Namuwite Group
Other Members of Namuwite Group:
BechereriteZn7Cu(OH)13[(SiO(OH)3(SO4)]Trig. 3 : P3
GordaiteNaZn4(SO4)(OH)6Cl · 6H2OTrig. 3 : P3
GuarinoiteZn6(SO4)(OH)10 · 5H2OHex.
Hanahanite[Zn8(OH)14(SO4)] · 3H2OHex. 6 : P63
Haywoodite[Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3]Tric. 1 : P1
Hodgesmithite(Cu,Zn)6Zn(SO4)2(OH)10 · 3H2OTrig. 3 : P3
LahnsteiniteZn4(SO4)(OH)6 · 3H2OTric. 1 : P1
NamuwiteZn4(SO4)(OH)6 · 4H2OTrig. 3 : P3
OsakaiteZn4(SO4)(OH)6 · 5H2OTric. 1 : P1
Ramsbeckite(Cu,Zn)15(SO4)4(OH)22 · 6H2OMon. 2/m
ThérèsemagnaniteNaCo4(SO4)(OH)6Cl · 6H2OTrig. 3 : P3

Common AssociatesHide

Associations Based on Photo Data:
2 photos of Tzeferisite associated with GreenockiteCdS
2 photos of Tzeferisite associated with GypsumCaSO4 · 2H2O
2 photos of Tzeferisite associated with FabritziteZn9(SO4)2(OH)12Cl2 · 6H2O

Related Minerals - Strunz-mindat GroupingHide

7.DF.Siligiite [Pb(H2O)5(SO4)][Zn9(OH)18]Mon. 2/m : P21/b
7.DF.AlcaparrosaiteK3Ti4+Fe3+(SO4)4O(H2O)2Mon. 2/m : B2/b
7.DF.FlaggitePb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O)Tric. 1 : P1
7.DF.BairditePb2Cu2+4Te6+2O10(OH)2(SO4) · H2OMon. 2/m : P21/b
7.DF.Cherokeeite[Pb2Zn(OH)4](SO4) · H2OMon. 2/m
7.DF.Ammoniomathesiusite(NH4)5(UO2)4(SO4)4(VO5) · 4H2OTet. 4/m : P4/n
7.DF.Sigogglinite[Pb6Zn(OH)8]2(SO4)6 · (H2O)8-xMon. 2/m : P2/m
7.DF.XBlueridgeite[Pb8Zn3Cu2+(OH)16](SO4)2(S2O3)2 · 2H2OMon. 2/m : P21/b
7.DF.ErssoniteMg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2OTrig. 3m(32/m) : P3c1
7.DF.PoellmanniteCa6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2OTrig. 3 : R3
7.DF.Carlsonite(NH4)5Fe3+3O(SO4)6 · 7H2OTric. 1 : P1
7.DF.Cuprocherokeeite[Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2OMon. 2/m
7.DF.Haywoodite[Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3]Tric. 1 : P1
7.DF.ChromschieffelinitePb10Te6+6O20(OH)14(CrO4)(H2O)5Orth. 222 : C2221
7.DF.05UklonskoviteNaMg(SO4)F · 2H2OMon. 2/m : P21/m
7.DF.10KainiteKMg(SO4)Cl · 3H2OMon. 2/m : B2/m
7.DF.10KaliochalciteKCu2(SO4)2[(OH)(H2O)]Mon. 2/m : B2/m
7.DF.15NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
7.DF.17GenplesiteCa3Sn(SO4)2(OH)6 · 3H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
7.DF.17'Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate)'Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O Trig. 3 : P3
7.DF.20SideronatriteNa2Fe(SO4)2(OH) · 3H2OOrth. 222 : P212121
7.DF.20MetasideronatriteNa2Fe(SO4)2(OH) · H2OOrth. mmm(2/m2/m2/m)
7.DF.25FleischeritePb3Ge(SO4)2(OH)6 · 3H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
7.DF.25MallestigitePb3Sb5+(SO4)(AsO4)(OH)6 · 3H2OHex. 6 : P63
7.DF.25SchaurteiteCa3Ge(SO4)2(OH)6 · 4H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
7.DF.25DespujolsiteCa3Mn4+(SO4)2(OH)6 · 3H2OHex. 6m2 : P62c
7.DF.30Slavíkite(H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2OTrig. 3 : R3
7.DF.35MetavoltineK2Na6Fe2+Fe3+6O2(SO4)12 · 18H2OTrig.
7.DF.40LannoniteMg2Ca4Al4(SO4)8F8 · 24H2OTet. 4/m : I4/m
7.DF.40VlodavetsiteAlCa2(SO4)2F2Cl · 4H2OTet. 4/m : I4/m
7.DF.45PeretaiteCa(SbO)4(SO4)2(OH)2 · 2H2OMon. 2/m : B2/b
7.DF.50GordaiteNaZn4(SO4)(OH)6Cl · 6H2OTrig. 3 : P3
7.DF.50CalamaiteNa2TiO(SO4)2 · 2H2OOrth. mmm(2/m2/m2/m) : Ibam
7.DF.52Huizingite-(Al)[(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6]Tric. 1 : P1
7.DF.52ScordariiteK8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2OTrig. 3 : R3
7.DF.55Clairite(NH4)2Fe3(SO4)4(OH)3 · 3H2OTric.
7.DF.55GiacovazzoiteK5Fe3+3O(SO4)6 · 10H2OMon. 2/m : P21/b
7.DF.57MagnanelliiteK3Fe3+2(SO4)4(OH)(H2O)2Mon. 2/m : B2/b
7.DF.60ArzruniteCu4Pb2(SO4)(OH)4Cl6 · 2H2O (?)Orth.
7.DF.60EvdokimoviteTl4(VO)3(SO4)5(H2O)5Mon. 2/m
7.DF.62Bridgesite-(Ce)CaCe2Cu6(SO4)4(OH)12 · 8H2OMon. 2/m : B2/m
7.DF.65ElyitePb4Cu(SO4)O2(OH)4 · H2OMon. 2/m : P21/b
7.DF.70YecoraiteFe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O
7.DF.70LautenthalitePbCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b
7.DF.75RiomarinaiteBi(SO4)(OH) · H2OMon. 2/m
7.DF.80DukeiteBi3+24Cr6+8O57(OH)6 · 3H2OTrig. 3m : P31c

Other InformationHide

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 TzeferisiteHide

References for TzeferisiteHide

Localities for TzeferisiteHide

Showing 2 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- 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.
Germany
 
  • Saxony-Anhalt
    • Mansfeld-Südharz
      • Hettstedt
Gerhard Möhn Collection Analyzed by ...
Greece (TL)
 
  • Attica
    • East Attica
      • Lavreotiki
        • Dimoliaki
          • Charvalo mines
Liebhart (2023) +1 other reference
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