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Yugawaralite

A valid IMA mineral species - grandfathered
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About YugawaraliteHide

Formula:
CaAl2Si6O16 · 4H2O
Colour:
Colourless, white, pinkish
Lustre:
Vitreous, Pearly
Hardness:
4½ - 5
Specific Gravity:
2.20 - 2.23
Crystal System:
Monoclinic
Member of:
Name:
Named after its discovery locality, Yugawara Hot Spring, Kanagawa Prefecture, Japan.

Unique IdentifiersHide

Mindat ID:
4376
Long-form identifier:
mindat:1:1:4376:8

IMA Classification of YugawaraliteHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Ca(Si6Al2)O16·4H2O
First published:
1952

Classification of YugawaraliteHide

9.GB.15

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings
Dana 7th ed.:
77.1.7.2
77.1.7.2

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
16.9.24

16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference for Standard
YugIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
YugWhitney & Evans (2010)Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371

Physical Properties of YugawaraliteHide

Vitreous, Pearly
Transparency:
Transparent, Translucent
Comment:
iridescent on {010}.
Colour:
Colourless, white, pinkish
Streak:
White
Hardness:
4½ - 5 on Mohs scale
Tenacity:
Very brittle
Cleavage:
Poor/Indistinct
{401}, {100} distinct, {101} imperfect
Parting:
{010}
Fracture:
Conchoidal
Density:
2.20 - 2.23 g/cm3 (Measured)    2.26 g/cm3 (Calculated)

Optical Data of YugawaraliteHide

Type:
Biaxial (+/-)
RI values:
nα = 1.492 - 1.496 nβ = 1.497 - 1.499 nγ = 1.502 - 1.504
2V:
Measured: 48° to 89°, Calculated: 58°
Max. Birefringence:
δ = 0.008 - 0.010
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
Moderate (negative)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure - the conoscopic view for a grain cut perpendicular to the acute bisectrix, using this mineral's 2V. The two small white dots mark the melatopes - the points where the two optic axes emerge - and are shown only when they fall within the field of view. The coloured bands are isochromatics, and the dark bands are isogyres.

Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
weak

Chemistry of YugawaraliteHide

Mindat Formula:
CaAl2Si6O16 · 4H2O
Element Weights:
Element% weight
O54.180 %
Si28.532 %
Al9.137 %
Ca6.786 %
H1.365 %

Calculated from ideal end-member formula.
O
Si
Al
Ca
H
Common Impurities:
Fe,Mg,Na,K

Crystallography of YugawaraliteHide

Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Pb
Setting:
Pc
Cell Parameters:
a = 6.72(2) Å, b = 13.98(2) Å, c = 10.05(2) Å
β = 111.52°
Ratio:
a:b:c = 0.481 : 1 : 0.719
Unit Cell V:
878.34 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals flat tabular parallel to {010}. Showing (100), (010), (001), (110), (120), (011) and (111).

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0010958YugawaraliteKvick A, Artioli G, Smith J V (1986) Neutron diffraction study of the zeolite yugawaralite at 13 K Zeitschrift fur Kristallographie 174 265-2811986Hvalfjordur, Iceland0293
0002627YugawaraliteArtioli G, Stahl K, Cruciani G, Gualtieri A, Hanson J C (2001) In situ dehydration of yugawaralite American Mineralogist 86 185-19220010315
0002628YugawaraliteArtioli G, Stahl K, Cruciani G, Gualtieri A, Hanson J C (2001) In situ dehydration of yugawaralite American Mineralogist 86 185-19220010454
0002629YugawaraliteArtioli G, Stahl K, Cruciani G, Gualtieri A, Hanson J C (2001) In situ dehydration of yugawaralite American Mineralogist 86 185-19220010581
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Loading XRD data...
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
3.057 Å(100)
4.672 Å(70)
4.652 Å(67)
5.81 Å(52)
7.01 Å(31)
3.237 Å(29)
4.295 Å(26)

Geological EnvironmentHide

Type Occurrence of YugawaraliteHide

General Appearance of Type Material:
A network of veins with well devloped crystals.
Place of Conservation of Type Material:
National Science Museum, Tokyo, Japan.
National School of Mines, Paris, France.
National Museum of Natural History, Washington, D.C., USA, 106164, 106931.
Geological Setting of Type Material:
Andesite tuff metamorphosed by hot spring action.
Associated Minerals at Type Locality:

Other Language Names for YugawaraliteHide

Relationship of Yugawaralite to other SpeciesHide

Member of:
Other Members of Zeolite Group:
AlflarseniteNaCa2Be3Si4O13(OH) · 2H2OMon. 2 : P21
AmiciteK2Na2Al4Si4O16 · 5H2OMon. 2
Ammonioleucite(NH4)(AlSi2O6)Tet. 4/m : I41/a
AnalcimeNa(AlSi2O6) · H2OTric. 1 : P1
ArzamastseviteK6Al5Si6O20(OH)4ClTet. 42m : I42m
Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2OHex.
BikitaiteLiAlSi2O6 · H2OTric. 1 : P1
BoggsiteCa8Na3(Si,Al)96O192 · 70H2OOrth. mmm(2/m2/m2/m) : Imma
Brewsterite SubgroupZeolite Group.
Chabazite-Levyne SubgroupM[Al2Si4O12] · 6H2O
ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
CowlesiteCaAl2Si3O10 · 6H2OOrth. mmm(2/m2/m2/m)
Dachiardite SubgroupZeolite Group.
DirenzoiteNaK6MgCa2(Al13Si47O120) · 36H2OOrth. mmm(2/m2/m2/m) : Pmmn
EdingtoniteBa[Al2Si3O10] · 4H2OOrth. 222 : P212121
EpistilbiteCaAl2Si6O16 · 5H2OMon.
Erionite SubgroupM2[Al4Si14O36] · 15H2O
FabrièsiteNa3Al3Si3O12 · 2H2OOrth. mm2 : Pmm2
Faujasite SubgroupM3.5[Al7Si17O48] · 32H2O
Ferrierite SubgroupName used for unanalysed specimens that could be either ferrierite-K, ferrierite-Mg, ...
FerrochiavenniteCa1-2Fe[(Si,Al,Be)5Be2O13(OH)2] · 2H2OMon. 2/m : P21/b
Flörkeite(K3Ca2Na)[Al8Si8O32] · 12H2OTric. 1 : P1
Garronite Subgroup
GaultiteNa4Zn2Si7O18 · 5H2OOrth. mm2 : Fdd2
Gismondine SubgroupZeolite Group.
Gmelinite SubgroupIn 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K.
GobbinsiteNa5(Si11Al5)O32 · 11H2OOrth. mmm(2/m2/m2/m) : Pnma
GoosecreekiteCa[Al2Si6O16] · 5H2OMon. 2 : P21
GottardiiteNa3Mg3Ca5Al19Si117O272 · 93H2OOrth. mmm(2/m2/m2/m) : Cmca
Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
HsianghualiteCa3Li2(Be3Si3O12)F2Iso. 23 : I213
KalborsiteK6Al4BSi6O20(OH)4ClTet. 42m : P421c
KirchhoffiteCs(BSi2O6)Tet. 4/mmm(4/m2/m2/m) : I41/acd
LaumontiteCaAl2Si4O12 · 4H2OMon. 2/m : B2/m
LeuciteK(AlSi2O6)Tet. 4/m : I41/a
LimousiniteBaCa[Be4P4O16] · 6H2OMon. 2/m : P21/b
LithositeK6Al4Si8O25 · 2H2OMon.
Loomisite Ba[Be2P2O8] · H2OMon. m
LovdariteK2Na6Be4Si14O36 · 9H2OOrth. mm2
MaricopaitePb7Ca2(Si,Al)48O100 · 32H2OOrth.
MartinandresiteBa2(Al4Si12O32) · 10H2OOrth. mmm(2/m2/m2/m) : Pmmn
Mazzite SubgroupZeolite Group.
MeieriteBa44Si66Al30O192Cl25(OH)33Iso. m3m(4/m32/m) : Im3m
MerlinoiteK5Ca2(Si23Al9)O64 · 24H2OOrth. mmm(2/m2/m2/m) : Immm
Montesommaite(K,Na)9Al9Si23O64 · 10H2OOrth. mm2 : Fdd2
Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2OOrth.
MountainiteKNa2Ca2[Si8O19(OH)] · 6H2OMon. 2/m : P2/b
MutinaiteNa3Ca4Si85Al11O192 · 60H2OOrth. mmm(2/m2/m2/m) : Pnma
NabesiteNa2BeSi4O10 · 4H2OOrth. 222 : P212121
Natrolite SubgroupA subgroup of the Zeolite Group.
OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6m2 : P6m2
PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 23 : I23
ParthéiteCa2(Si4Al4) O15 (OH)2 · 4H2OMon. 2/m : B2/b
Paulingite SubgroupPaulingite was originally described in 1960.
PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2OHex. 6/mmm(6/m2/m2/m) : P6/mmm
Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Pollucite(Cs,Na)2(Al2Si4O12) · 2H2OIso. m3m(4/m32/m) : Ia3d
RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2OTet. 4/mmm(4/m2/m2/m) : I4/mcm
RongibbsitePb2(Si4Al)O11(OH) Mon. 2/m : B2/m
Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Terranovaite(Na,Ca)8(Si68Al12)O160 · 29H2OOrth.
Thomsonite SubgroupThe large majority of "thomsonite" is thomsonite-Ca.
ThornasiteNa12Th4+3(Si8O19)4 · 18H2OTrig. 3m : R3m
Tschernichite(Ca,Na2)[Al2Si4O12] · 4-8H2OTet. 4/mmm(4/m2/m2/m) : P4/mmm
TschörtneriteCa4(Ca,Sr,K,Ba)3Cu3[Al3Si3O12]4(OH)8 · nH2OIso. m3m(4/m32/m) : Fm3m
'UM1996-38-SiO:AlCaHNa'Na-Ca-Al-Si-O-H
'UM1999-33-SiO:AlHKNa'K7Na5Al12Si20O64 · 24H2O
'UM2002-40-SiO:AlCaHKMgNa'(Mg,Ca,Na,K)7.5(Al12.8Si51.2)O128 · 65H2OTet. 422 : P4122
'Unnamed (Ca analogue of Merlinoite)'(Ca,K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O ?
WairakiteCa(Al2Si4O12) · 2H2OMon. 2/m : B2/m
WeinebeneiteCaBe3(PO4)2(OH)2 · 4H2OMon. m : Bb
Wenkite(Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2OHex. 6m2 : P62m
Wilancookite(Ba5Li2◻)Ba6Be24P24O96 · 26H2OIso. 23 : I23
WillhendersoniteKCa[Al3Si3O12] · 5H2OTric. 1 : P1

Common AssociatesHide

Associations Based on Photo Data:
39 photos of Yugawaralite associated with QuartzSiO2
16 photos of Yugawaralite associated with Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
10 photos of Yugawaralite associated with CalciteCaCO3
6 photos of Yugawaralite associated with Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
6 photos of Yugawaralite associated with LaumontiteCaAl2Si4O12 · 4H2O
3 photos of Yugawaralite associated with GyroliteNaCa16Si23AlO60(OH)8 · 14H2O
3 photos of Yugawaralite associated with Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
3 photos of Yugawaralite associated with MesoliteNa2Ca2Si9Al6O30 · 8H2O
2 photos of Yugawaralite associated with 'Basalt'
2 photos of Yugawaralite associated with EpistilbiteCaAl2Si6O16 · 5H2O

Related Minerals - Strunz-mindat GroupingHide

9.GB.05FabrièsiteNa3Al3Si3O12 · 2H2OOrth. mm2 : Pmm2
9.GB.05LithositeK6Al4Si8O25 · 2H2OMon.
9.GB.05WairakiteCa(Al2Si4O12) · 2H2OMon. 2/m : B2/m
9.GB.05KirchhoffiteCs(BSi2O6)Tet. 4/mmm(4/m2/m2/m) : I41/acd
9.GB.05HsianghualiteCa3Li2(Be3Si3O12)F2Iso. 23 : I213
9.GB.05LeuciteK(AlSi2O6)Tet. 4/m : I41/a
9.GB.05Pollucite(Cs,Na)2(Al2Si4O12) · 2H2OIso. m3m(4/m32/m) : Ia3d
9.GB.05Ammonioleucite(NH4)(AlSi2O6)Tet. 4/m : I41/a
9.GB.05AnalcimeNa(AlSi2O6) · H2OTric. 1 : P1
9.GB.10LaumontiteCaAl2Si4O12 · 4H2OMon. 2/m : B2/m
9.GB.20RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2OTet. 4/mmm(4/m2/m2/m) : I4/mcm
9.GB.25GoosecreekiteCa[Al2Si6O16] · 5H2OMon. 2 : P21
9.GB.30Montesommaite(K,Na)9Al9Si23O64 · 10H2OOrth. mm2 : Fdd2
9.GB.35ParthéiteCa2(Si4Al4) O15 (OH)2 · 4H2OMon. 2/m : B2/b

Other InformationHide

Electrical:
Piezoelectric and pyroelectric
Notes:
Not attacked by hot or cold hydrochloric acid.
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 YugawaraliteHide

References for YugawaraliteHide

Reference List:

Localities for YugawaraliteHide

Showing 46 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.
Hide all sections | Show all sections

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.
Argentina
 
  • Neuquén Province
    • Huiliches department
Bowman et al. (2006)
    • Los Lagos Department
Vattuone et al. (2001)
Leal +1 other reference
  • Salta Province
    • Los Andes department
      • San Antonio de los Cobres
        • El Quevar mining district
Robl et al. (2009)
Canada
 
  • British Columbia
    • Osoyoos Mining Division
      • Olalla
Tschernich (1992)
Chile
 
  • Santiago Metropolitan Region
    • Chacabuco Province
Fuentes et al. (2004)
Costa Rica
 
  • San José Province
    • Acosta Canton
      • Guaitil District
Zeledón (2004)
    • Dota Canton
      • Copey District
Obando-Acuña et al. (2019)
France
 
  • Réunion
DE ASCENCAO GUEDES R. (2004)
Serge Lavarde Collection
Hungary
 
  • Csongrád County
    • Üllés
Rappensberger
Iceland
 
  • Capital Region
    • Kjósarhreppur
Weisenberger et al. (2009)
Robinson (1986) +2 other references
  • Western Region
    • Borgarbyggð
      • Haugar
self collected by Jamison Turnbull
Personal collection of Jamison K ...
    • Hvalfjarðarsveit
Robinson (1986) +1 other reference
Betz (1981)
India
 
  • Maharashtra
    • Konkan Division
Ottens et al. (2022)
        • Mumbai Suburban District
Lavinsky (n.d.)
          • Malad
Wise (1978) +1 other reference
    • Nashik Division
      • Nashik District
        • Sinnar
Collection Elmar Lackner and many others
Italy
 
  • Lazio
    • Metropolitan City of Rome Capital
      • Rome
        • Valleranello
Carlini et al. (2018)
  • Lombardy
    • Sondrio Province
      • Novate Mezzola
        • Codera Valley
Ghizzoni et al. (2005)
Ghizzoni et al. (2005)
  • Sardinia
    • Sassari Province
      • Osilo
Berg (1982)
Gelosa et al. (1999)
  • Veneto
Mattioli et al. (2016)
    • Verona Province
      • San Giovanni Ilarione
Mattioli et al. (2008) +3 other references
Japan
 
  • Aomori Prefecture
    • Kuroishi City
ONUKI et al. (1988)
  • Hokkaidō Prefecture
    • Tokachi Subprefecture
      • Obihiro City
Konno et al. (1977)
  • Kanagawa Prefecture
    • Ashigarashimo District
      • Yugawara
Sakurai et al. (1952)
  • Miyagi Prefecture
Seki et al. (1968) +1 other reference
  • Shizuoka Prefecture
    • Izu City
Pinch (1977) +1 other reference
Nozomi Sasaki discovery and specimens
Jordan
 
  • Irbid Governorate
    • Maqarin area
Khoury et al. (1985)
New Zealand
 
  • Southland Region
    • Southland District
Railton et al. (1990)
Ukraine
 
World of Stones v.9
    • Feodosia area
Tischenko A. data
USA
 
  • Alaska
    • Aleutians East Borough
      • Unalaska Island
...
    • Fairbanks North Star Borough
      • Chena River
Moore (2000)
Eberlein et al. (1971)
  • Oregon
    • Marion County
      • Santiam Mining District (Elkhorn Mining District)
        • Breitenbush-Austin Hot Springs area
Bargar et al. (1997)
  • Washington
    • Cowlitz County
      • Wolf Point
Micro Probe Vol. 7 No. 10
Micro Probe +1 other reference
  • Wyoming
    • Teton County
Bargar et al. (1981)
Bargar et al. (1981)
 
and/or  
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