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Pianlinite

A discredited species name
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Formula:
Al2Si2O6(OH)2
Lustre:
Vitreous
Hardness:
6 - 7
Crystal System:
Orthorhombic
Originally reported from Pianling, Xiuyan Co., Anshan Prefecture, Liaoning Province (Manchuria), China.


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Unique IdentifiersHide

Mindat ID:
7235
Long-form identifier:
mindat:1:1:7235:5

IMA Classification of PianliniteHide

IMA status:
Discredited

Classification of PianliniteHide

Strunz-mindat (2025):
9.ED.30

9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets

Physical Properties of PianliniteHide

Lustre:
Vitreous
Hardness:
6 - 7 on Mohs scale

Optical Data of PianliniteHide

Type:
Biaxial (-)
RI values:
nα = 1.532 nβ = 1.539 nγ = 1.541
2V:
Calculated: 56°
Max. Birefringence:
δ = 0.009
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.

Surface Relief:
Moderate
Dispersion:
weak

Chemistry of PianliniteHide

Mindat Formula:
Al2Si2O6(OH)2
Element Weights:
Element% weight
O53.299 %
Si23.390 %
Al22.471 %
H0.839 %

Calculated from ideal end-member formula.
Elements listed:
Al, H, O, Si - search for minerals with similar chemistry

Crystallography of PianliniteHide

Crystal System:
Orthorhombic

Other Language Names for PianliniteHide

German:Pianlinit
Spanish:Pianlinita

Related Minerals - Strunz-mindat GroupingHide

9.ED.ClinochrysotileMg3(Si2O5)(OH)4Mon. 2/m
9.ED.05DickiteAl2(Si2O5)(OH)4Mon. m : Bb
9.ED.05NacriteAl2(Si2O5)(OH)4Mon. m : Bb
9.ED.05KaoliniteAl2(Si2O5)(OH)4Tric. 1 : P1
9.ED.05Odinite(Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4Mon. m : Bm
9.ED.10HalloysiteAl2(Si2O5)(OH)4Mon. m : Bb
9.ED.10HisingeriteFe3+2(Si2O5)(OH)4 · 2H2OMon.
9.ED.10HydrohalloysiteAl2Si2O5(OH)4 · 2H2OMon. m
9.ED.15AntigoriteMg3(Si2O5)(OH)4Mon. m : Bm
9.ED.15Brindleyite(Ni,Al)3(Si,Al)2O5(OH)4Mon.
9.ED.15Fraipontite(Zn,Al)3((Si,Al)2O5)(OH)4Mon.
9.ED.15NépouiteNi3Si2O5(OH)4Orth.
9.ED.15PecoraiteNi3(Si2O5)(OH)4Mon.
9.ED.15GuidottiiteMn2Fe3+(Fe3+SiO5)(OH)4Hex. 6 : P63
9.ED.15LizarditeMg3(Si2O5)(OH)4Trig. 3m : P3 1m
9.ED.15Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4Mon. m : Bm
9.ED.15KellyiteMn2+2Al(AlSiO5)(OH)4Hex. 6 : P63
9.ED.15CronstedtiteFe2+2Fe3+((Si,Fe3+)2O5)(OH)4Trig. 3m : P3 1m
9.ED.15CaryopiliteMn2+3Si2O5(OH)4Mon.
9.ED.15 vaChromoamesiteMg2(Al,Cr)(AlSiO5)(OH)4
9.ED.15AmesiteMg2Al(AlSiO5)(OH)4Tric. 1 : P1
9.ED.15Greenalite(Fe2+,Fe3+)2-3Si2O5(OH)4Mon.
9.ED.15ManandoniteLi2Al4(Si2AlB)O10(OH)8Orth. 2 2 2 : C2 2 21
9.ED.20ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1Orth.
9.ED.20Neotocite(Mn,Fe)SiO3 · H2O (?)Amor.
9.ED.20Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2OAmor.
9.ED.20ImogoliteAl2SiO3(OH)4
9.ED.25BismutoferriteFe3+2Bi(SiO4)2(OH)Mon. m : Bm
9.ED.25ChapmaniteFe3+2Sb3+(Si2O5)O3(OH)Mon. m : Bm

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 PianliniteHide

References for PianliniteHide

Localities for PianliniteHide

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.
China
 
  • Liaoning
    • Anshan
      • Xiuyan Co.
AM 65 (1980)
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