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Jonesite

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Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA
© 1995-2001 Trinity Mineral Co.

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Formula:
Ba
 
4
(K,Na)
 
2
Ti
 
4
Al
 
2
(Si
 
3
O
 
9
)
 
2
(SiO
 
4
)
 
4
O
 
2
 · 6H
 
2
O
System:OrthorhombicHardness:3 - 4
This page provides mineralogical data about Jonesite.

Classification of Jonesite

IMA status:Approved
Strunz 8th edition ID:8/E.03-10
Nickel-Strunz 10th (pending) edition ID:9.DJ.30

9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
Dana 8th edition ID:61.2.2.1

61 : CYCLOSILICATES Six-Membered Rings
2 : Six-Membered Rings with Al substituted rings
Hey's CIM Ref.:16.14.6

16 : Silicates Containing Aluminum and other Metals
14 : Aluminosilicates of Ti, Zr, Sn and Pb
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Type Occurrence of Jonesite

Type Locality:Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA
Year of Discovery:1977

Physical Properties of Jonesite

Hardness (Mohs):3 - 4

Crystallography of Jonesite

Crystal System:Orthorhombic
Cell Parameters:a = 13.73Å, b = 25.9Å, c = 10.6Å
Ratio:a:b:c = 0.53 : 1 : 0.409
Unit Cell Volume:V 3,769.43 ų (Calculated from Unit Cell)

Optical Data of Jonesite

Type:Biaxial (+)
RI values: nα = 1.641 nβ = 1.660 nγ = 1.682
Maximum Birefringence:δ = 0.041

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

Chemical Properties of Jonesite

Formula:
Ba
 
4
(K,Na)
 
2
Ti
 
4
Al
 
2
(Si
 
3
O
 
9
)
 
2
(SiO
 
4
)
 
4
O
 
2
 · 6H
 
2
O
Essential elements:Al, Ba, H, K, O, Si, Ti
All elements listed in formula:Al, Ba, H, K, Na, O, Si, Ti
Common Impurities:B,Fe,Nb,Mn,Mg,Ca,Sr

Relationship of Jonesite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DJ.05Narsarsukite
Na
 
4
(Ti,Fe)
 
2
[Si
 
8
O
 
20
](O,OH,F)
 
2
9.DJ.10Laplandite-(Ce)
Na
 
4
CeTiPO
 
4
Si
 
7
O
 
18
 · 5H
 
2
O
9.DJ.15Caysichite-(Y)
Ca
 
2
Y
 
2
Si
 
4
O
 
10
(CO
 
3
)
 
3
 · 4H
 
2
O
9.DJ.20Seidite-(Ce)
Na
 
4
(Ce,Sr)
 
2
Ti[(O,OH,F)
 
5
|Si
 
8
O
 
18
(OH)] · 5H
 
2
O
9.DJ.25Carlosturanite
(Mg,Fe,Ti)
 
21
(Si,Al)
 
12
O
 
28
(OH)
 
34
•H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
16.14.1Zorite
Na
 
8
(Ti,Nb)
 
5
(Si
 
6
O
 
17
)
 
2
(OH,O)
 
5
 · 14H
 
2
O
16.14.2Vinogradovite
(Na,Ca,K)
 
4
Ti
 
4
AlSi
 
6
O
 
23
(OH) · 2H
 
2
O
16.14.3Rhönite
Ca
 
2
(Mg,Fe
2+
 
,Fe
3+
 
,Ti)
 
6
[O
 
2
|(Si,Al)
 
6
O
 
18
]
16.14.4Kaersutite
{Na}{Ca
 
2
}{Mg
 
3
AlTi}(Al
 
2
Si
 
6
O
 
22
)O
 
2
16.14.5Ferro-kaersutite
{Na}{Ca
 
2
}{Fe
2+
3
AlTi}(Al
 
2
Si
 
6
O
 
22
)O
 
2
16.14.7Lourenswalsite
(K,Ba)
 
2
(Ti,Mg,Ca,Fe)
 
4
(Si,Al,Fe)
 
6
O
 
14
(OH)
 
12
16.14.8Labuntsovite-Mn
Na
 
4
K
 
4
(Ba,K)
 
2
Mn
2+
 
(Ti,Nb)
 
8
(Si
 
4
O
 
12
)
 
4
(O,OH)
 
8
 · 10-12H
 
2
O
16.14.9Kimzeyite
Ca
 
3
(Zr,Ti)
 
2
((Si,Al,Fe
3+
 
)O
 
4
)
 
3
16.14.10Ellenbergerite
Mg
 
6
(Mg,Ti,Zr,◻)
 
2
(Al,Mg)
 
6
Si
 
8
O
 
28
(OH)
 
10
16.14.11Carlosturanite
(Mg,Fe,Ti)
 
21
(Si,Al)
 
12
O
 
28
(OH)
 
34
•H
 
2
O
16.14.12Eakerite
Ca
 
2
SnAl
 
2
Si
 
6
O
 
18
(OH)
 
2
 · 2H
 
2
O
16.14.13Plumalsite
Pb
 
4
Al
 
2
(SiO
 
3
)
 
7
16.14.14Wickenburgite
CaPb
 
3
Al
 
2
Si
 
10
O
 
24
(OH)
 
6
16.14.15Maricopaite
Pb
 
7
Ca
 
2
(Si,Al)
 
48
O
 
100
 · 32H
 
2
O
16.14.16Epidote-(Pb)
{CaPb}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
16.14.17Burckhardtite
Pb
 
2
(Fe
3+
 
,Mn
3+
 
)Te
4+
 
(AlSi
 
3
O
 
10
)O
 
2
(OH)
 
2
 · H
 
2
O
16.14.18Mathewrogersite
Pb
 
7
FeAl
 
3
GeSi
 
12
O
 
36
(OH,H
 
2
O)
 
6

Other Names for Jonesite

Synonyms:
IMA1976-040
Other Languages:
German:Jonesit
Russian:Джонесит
Spanish:Jonesita

Other Information

Fluorescence in UV light:Orange yellow in SW; weak orange yellow in LW
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 Jonesite

Reference List:

- +
Wise, W.S. and Pabst, A. (1977) Jonesite: a new mineral from the benitoite gem mine, San Benito County, California. Mineralogical Record: 8: 455-456.

Internet Links for Jonesite

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    • Localities for Jonesite

    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.
    Hide Locality List
    (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.
    Atlantic Ocean
     
    • Mid-Atlantic Ridge complex
    		Gablina, I.F., Semkova, T.A., Stepanova, T.V., and Gor'kova, N.V. (2006): Lithology and Mineral Resources 41(1), 27-44.
    Slovakia
     
    • Prešov Region
      • Vranov nad Topľou Co.
    		Ďuďa,R., et al., 1981: Mineralógia severnej časti Slanských vrchov. Min.Slovaca, Monografia 2, 98s
    USA
     
    • California
      • San Benito Co.
        • Diablo Range
          • New Idria District
            • San Benito River headwaters area
              • Dallas Gem Mine area
    		Wise, W.S & Gill, R.H. (1977): Minerals of the Benitoite Gem mine. The Mineralogical Record 8, 442-452; Wise, W.S. & Pabst, A. (1977): Jonesite a new mineral from the Benitoite Gem mine, San Benito County, California. The Mineralogical Record 8, 453-456; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 472.
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