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Yugawaralite

Big Photo

Cirque de Cilaos, Piton des Neiges, Réunion Island
© JM. Johannet

Show Yugawaralite Photos (29)
Formula:
CaAl
 
2
Si
 
6
O
 
16
·4H
 
2
O
System:MonoclinicColour:Colourless, white, ...
Hardness:4½
Name:Named after its discovery locality, Yugawara Hot Springs, Kanagawa Prefecture, Japan.


Zeolite Group. Laumontite Subgroup.

Classification of Yugawaralite

IMA status:Approved
Strunz 8th edition ID:8/J.25-90
Nickel-Strunz 10th (pending) edition ID:9.GB.15

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings
Dana 7th edition ID:77.1.7.2
Dana 8th edition ID:77.1.7.2

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
Hey's CIM Ref.:16.9.24

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

Type Locality:Yugawara Hot Spring, Kanagawa Prefecture, Kanto Region, Honshu Island, Japan
Year of Discovery:1952

Physical Properties of Yugawaralite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent
Colour:Colourless, white, pinkish
Streak:White
Hardness (Mohs):4½
Cleavage:Poor/Indistinct
Indistinct on the [010]
Fracture:Conchoidal

Crystallography of Yugawaralite

Crystal System:Monoclinic
Cell Parameters:a = 6.72Å, b = 13.98Å, c = 10.05Å
β = 111.52°
Ratio:a:b:c = 0.481 : 1 : 0.719
Unit Cell Volume:V 878.34 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data: Peaks:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Yugawaralite

Type:Biaxial (+)
RI values: nα = 1.495 nβ = 1.497 nγ = 1.504
2V:Measured: 78° , Calculated: 58°
Maximum Birefringence:δ = 0.009

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:weak

Chemical Properties of Yugawaralite

Formula:
CaAl
 
2
Si
 
6
O
 
16
·4H
 
2
O
Essential elements:Al, Ca, H, O, Si
All elements listed in formula:Al, Ca, H, O, Si
Common Impurities:Fe,Mg,Na,K

Relationship of Yugawaralite to other Species

Related to:
  • Laumontite Subgroup
    • Related Minerals - Nickel-Strunz Grouping):
    9.GB.05Ammonioleucite
    (NH
     
    4
    		,K)AlSi
     
    2
    		O
     
    6
    9.GB.05Analcime
    Na
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    9.GB.05Hsianghualite
    Ca
     
    3
    		Li
     
    2
    		Be
     
    3
    		[F
     
    2
    		|(SiO
     
    4
    		)
     
    3
    		]
    9.GB.05Lithosite
    K
     
    6
    		Al
     
    4
    		Si
     
    8
    		O
     
    25
    		·2H
     
    2
    		O
    9.GB.05Leucite
    KAlSi
     
    2
    		O
     
    6
    9.GB.05Pollucite
    (Cs,Na)
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    9.GB.05Wairakite
    Ca[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    9.GB.10Laumontite
    CaAl
     
    2
    		Si
     
    4
    		O
     
    12
    		·4H
     
    2
    		O
    9.GB.20Roggianite
    Ca
     
    2
    		Be(OH)
     
    2
    		Al
     
    2
    		Si
     
    4
    		O
     
    13
    		·2.5H
     
    2
    		O
    9.GB.25Goosecreekite
    Ca[Al
     
    2
    		Si
     
    6
    		O
     
    16
    		] · 5H
     
    2
    		O
    9.GB.30Montesommaite
    (K,Na)
     
    9
    		Al
     
    9
    		Si
     
    23
    		O
     
    64
    		·10H
     
    2
    		O
    9.GB.35Parthéite
    CaAl
     
    2
    		Si
     
    2
    		O
     
    8
    		·2H
     
    2
    		O
    Related Minerals - Hey's Index Grouping:
    16.9.1Gehlenite
    Ca
     
    2
    		Al[AlSiO
     
    7
    		]
    16.9.2Anorthite
    Ca[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
    16.9.3Yoshiokaite
    (Ca,Na)[Al(Al,Si)O
     
    4
    		]
    16.9.4Svyatoslavite
    Ca[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
    16.9.5Dmisteinbergite
    Ca[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
    16.9.6Grossular
    Ca
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    16.9.7Vuagnatite
    CaAl[OH|SiO
     
    4
    		]
    16.9.8Zoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    16.9.9Clinozoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    16.9.10Prehnite
    Ca
     
    2
    		Al
     
    2
    		Si
     
    3
    		O
     
    12
    		(OH)
    16.9.11Kamaishilite
    Ca
     
    2
    		[(OH)
     
    2
    		|Al
     
    2
    		SiO
     
    6
    		]
    16.9.12Bicchulite
    Ca
     
    2
    		[(OH)
     
    2
    		|Al
     
    2
    		SiO
     
    6
    		]
    16.9.13Margarite
    CaAl
     
    2
    		[(OH)
     
    2
    		|Al
     
    2
    		Si
     
    2
    		O
     
    10
    		]
    16.9.14Chantalite
    CaAl
     
    2
    		[(OH)
     
    4
    		|SiO
     
    4
    		]
    16.9.15Cebollite
    Ca
     
    5
    		Al
     
    2
    		Si
     
    3
    		O
     
    12
    		(OH)
     
    4
    		 or near
    16.9.17Katoite
    Ca
     
    3
    		Al
     
    2
    		[(OH)
     
    8-6
    		|(SiO
     
    4
    		)
     
    1-1.5
    		]
    16.9.18Lawsonite
    CaAl
     
    2
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    16.9.19Parthéite
    CaAl
     
    2
    		Si
     
    2
    		O
     
    8
    		·2H
     
    2
    		O
    16.9.20Wairakite
    Ca[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    16.9.21Vertumnite
    Ca
     
    4
    		Al
     
    4
    		Si
     
    4
    		O
     
    6
    		(OH)
     
    24
    		·3H
     
    2
    		O
    16.9.22Scolecite
    Ca[Al
     
    2
    		Si
     
    3
    		O
     
    10
    		] · 3H
     
    2
    		O
    16.9.23Laumontite
    CaAl
     
    2
    		Si
     
    4
    		O
     
    12
    		·4H
     
    2
    		O
    16.9.25Gismondine-Ca
    CaAl
     
    2
    		Si
     
    2
    		O
     
    8
    		·4H
     
    2
    		O
    16.9.26Epistilbite
    CaAl
     
    2
    		Si
     
    6
    		O
     
    16
    		·5H
     
    2
    		O
    16.9.27Goosecreekite
    Ca[Al
     
    2
    		Si
     
    6
    		O
     
    16
    		] · 5H
     
    2
    		O
    16.9.28Cowlesite
    CaAl
     
    2
    		Si
     
    3
    		O
     
    10
    		·6H
     
    2
    		O
    16.9.30Stellerite
    Ca[Al
     
    2
    		Si
     
    7
    		O
     
    18
    		] · 7H
     
    2
    		O
    16.9.31Strätlingite
    Ca
     
    2
    		Al
     
    2
    		SiO
     
    7
    		·8H
     
    2
    		O
    16.9.32Amstallite
    CaAl(Si,Al)
     
    4
    		O
     
    8
    		(OH)
     
    4
    		·(H
     
    2
    		O,Cl)
    Related Minerals - Dana Grouping):
    77.1.7.1Brewsterite-Ba
    (Ba,Sr)[Al
     
    2
    		Si
     
    6
    		O
     
    16
    		] · 5H
     
    2
    		O

    Other Names for Yugawaralite

    German names:
    Yugawaralit
    Japanese names:
    湯河原沸石
    Russian names:
    Югаваралит
    Spanish names:
    Yugawaralita

    Other Information

    Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

    References for Yugawaralite

    Reference List:Sci. Rep. Yokohama Nat. Univ. (1952): section 2, No. 1: 69-77.

    Zeitschrift für Kristallographie: 174: 265-281.

    Mineralogical Record (1999): 30: 5-6.

    Internet Links for Yugawaralite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Yugawaralite in the Natural History Museum (London) online catalogue
  • Yugawaralite details from Handbook of Mineralogy (PDF)
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    Localities for Yugawaralite

    Hide Locality List
    The 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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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Argentina
     
    • Neuquén
    		No reference listed
    Canada
     
    • British Columbia
      • Osoyoos Mining Division
        • Olalla
    		Tschernich, R. (1992): Zeolites of the World, p.51,524
    Iceland
     
    • Haugar
    		Self collected by Jamison Turnbull
    [MinRec 17:340, 18:437-438]
    Zeolites of the World, R. Tscherinch, 1992 (524)
    [MinRec 12:21]
    Personal collection of Jamison K Turnbull.
    India
     
    • Maharashtra
      • Mumbai District (Bombay District)
    		Rob Lavinsky
    Wise, W.S. (1978): Yugawaralite from Bombay, India. Mineralogical Record 9 (5): 296
    No reference listed
      • Nasik District
    		Collection Elmar Lackner (and many others).
    Italy
     
    • Lombardy
      • Sondrio Province
        • Novate Mezzola
          • Codera Valley
    		Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 pp.
    Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 pp.
    • Sardinia
      • Sassari Province
        • Osilo
    		Gelosa, M. & Mameli, P. (1999): I minerali delle cave di Osilo: località mineralogiche della Sardegna. Rivista Mineralogica Italiana, 2/1999, 92-96.
    Japan
     
    • Honshu Island
      • Chubu Region
        • Shizuoka Prefecture
          • Toi-cho
    		[MinRec 8:517]
      • Kanto Region
        • Kanagawa Prefecture
    		Sci.Rep. Yokohama Nat.Univ.(1952) sect. 2, no. 1, 69-77
      • Tohoku Region
        • Aomori Prefecture
          • Kuroishi City
    		Onuki et al (1988) Journal of Mineralogy, Petrology and Economic Geology, 83, 311-317.
    New Zealand
     
    • South Island
      • Southland
    		Railton, G.L. et al (1990)
    Réunion Island
     
    • Piton des Neiges
    		DE ASCENCAO GUEDES R. (2004) A vos loupes n°2 : la yugawaralite, Le Règne minéral, 59, 42-45. (in French)
    Ukraine
     
    • Crimea Oblast'
    		World of Stones v.9
    USA
     
    • Alaska
      • Aleutians East Borough
        • Unalaska Island
    		wwwdggs.dnr.state.ak.us/scan1/ri/text/RI84-23.PDF.
      • Chena River
    		Tom Moore, "What's New in Minerals: Tuscon Show 2000" Mineralogical Record, May/June 2000.
      • Fairbanks North Star Borough
        • Chena River
          • Tors Campground Trail
    		Eberling, G. D., R. C. Erd, Florence Weber, and L. B. Beatty. "New Occurrence of Yugawaralite From the Chena Hot Springs Area, Alaska." The American Mineralogist 56 (1971): 1699-1715. 31 Dec. 2007.
    • Washington
      • Cowlitz Co.
        • Wolf Point
    		Micro Probe Vol. 7 No. 10
    • Wyoming
      • Park Co.
    		[MinRec 12:34-35]
    Mineral and/or Locality
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