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UM2005-31-SiO:CuH

Valid as an unnamed mineral
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Formula:
Cu11(SiO4)(OH)18 · 9H2O (?)
Smith & Nickel don't report the formula as an uncertain one; also given as (Cu,Pb)8(SiO4)(OH)12.8H2O
Colour:
bluish green to turquoise
Lustre:
Vitreous
Hardness:
2
Specific Gravity:
3.74 (Calculated)
As crusts on fluorite and quartz; "the latter contains partially corroded galena. The crusts are fine-grained, with angular fragments seen at high magnification, and are partly composed of spherulitic aggregates with a maximum diameter of 10 microns."

The show a radiating internal structure.

EPMA data [wt.%, water by difference, empirical formula based on 24 O atoms pfu]:

CuO 63.9
PbO 7.09
SiO2 4.15
SO3 0.52
H2O 24.34

total 100.00

This corresponds to Cu8.23Pb0.33Si0.71S0.07H27.67O24.




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Unique IdentifiersHide

Mindat ID:
29127
Long-form identifier:
mindat:1:1:29127:3
GUID
(UUID V4):
e47b44d3-3cfa-43d4-977c-02f886ff0508

Classification of UM2005-31-SiO:CuHHide

IMA status notes:
Unnamed (probably valid)
Approval history:
Unnamed, and probably invalid.
Strunz-mindat (2023):
9.DB.40

9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals

Physical Properties of UM2005-31-SiO:CuHHide

Lustre:
Vitreous
Transparency:
Translucent
Colour:
bluish green to turquoise
Streak:
bluish green to turquoise
Hardness:
2 on Mohs scale
Comment:
approx.
Cleavage:
None Observed
Density:
3.74 g/cm3 (Calculated)

Optical Data of UM2005-31-SiO:CuHHide

Comments:
negative optical elongation

Chemical Properties of UM2005-31-SiO:CuHHide

Formula:
Cu11(SiO4)(OH)18 · 9H2O (?)

Smith & Nickel don't report the formula as an uncertain one; also given as (Cu,Pb)8(SiO4)(OH)12.8H2O
Elements listed:
Cu, H, O, Si - search for minerals with similar chemistry

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.04 Å(10)
2.74 Å(3)
2.50 Å(0.5)
2.15 Å(3)
1.89 Å(1)
1.573 Å(10)
Comments:
pattern similar to either andradite or a pyrochlore-supergroup species

Synonyms of UM2005-31-SiO:CuHHide

Related Minerals - Strunz-mindat GroupingHide

9.DB.05BalipholiteBaLiMg2Al3(Si2O6)2(OH)4Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05CarpholiteMn2+Al2(Si2O6)(OH)4Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05FerrocarpholiteFe2+Al2Si2O6(OH)4Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05MagnesiocarpholiteMgAl2Si2O6(OH)4Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05PotassiccarpholiteK(Mn2+,Li)2Al4Si4O12(OH,F)8Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05VanadiocarpholiteMn2+V3+Al(Si2O6)(OH)4Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.10LorenzeniteNa2Ti2(Si2O6)O3Orth. mmm (2/m 2/m 2/m) : Pbcn
9.DB.15LintisiteLiNa3Ti2(Si2O6)2O2 · 2H2OMon. 2/m : B2/b
9.DB.15PunkaruaiviteLiTi2(HSi4O12)(OH)2 · H2OMon. 2/m : B2/b
9.DB.17EliseeviteLiNa1.5Ti2(H1.5Si4O12)O2 · 2H2OMon. 2/m : B2/b
9.DB.20KukisvumiteNa6ZnTi4(Si8O24)O4 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pccn
9.DB.20ManganokukisvumiteNa6MnTi4(Si8O24)O4 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pccn
9.DB.25VinogradoviteNa4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3Mon. 2/m : B2/b
9.DB.25ParavinogradoviteNa1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2OTric. 1 : P1
9.DB.30NchwaningiteMn2+2(SiO3)(OH)2 · H2OOrth. mm2 : Pca21
9.DB.35PlancheiteCu8(Si8O22)(OH)4 · H2OOrth. mmm (2/m 2/m 2/m)
9.DB.40ShattuckiteCu5(Si2O6)2(OH)2Orth. mmm (2/m 2/m 2/m)
9.DB.45Aerinite(Ca5.1Na0.5)(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12]Trig. 3m : P3c1
9.DB.50CapranicaiteKCaNaAl4B4Si2O18Mon. 2/m : P21/m

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 UM2005-31-SiO:CuHHide

References for UM2005-31-SiO:CuHHide

Reference List:
Walenta, K., Theye, T. (2005) Ein neues silikatisches Kupfermineral von der Grube Clara im mittleren Schwarzwald. Der Erzgräber, 19 (1) 1-4
Smith, D.G.W., Nickel, E.H. (2007): A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. Can. Mineral.: 45: 983-1055 (2012 Update); http://nrmima.nrm.se (2016)

Localities for UM2005-31-SiO:CuHHide

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.

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
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Walenta, K., Theye, T. (2005) Ein neues silikatisches Kupfermineral von der Grube Clara im mittleren Schwarzwald. Der Erzgräber, 19 (1) 1-4
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