Jonesite
A valid IMA mineral species
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About Jonesite
Francis T. Jones
Formula:
Ba4(K,Na)2Ti4Al2(Si3O9)2(SiO4)4O2 · 6H2O
Colour:
Colorless
Hardness:
3 - 4
Specific Gravity:
3.25
Crystal System:
Monoclinic
Name:
Named in honor of Francis Tucker Jones (17 Jan 1905, Rocklin, California, USA - 24 September 1993, Richmond, California, USA), professor of chemistry at Pacific University, Forest Grove, Oregon and later chemical microscopist with the U.S. Department of Agriculture. He discovered the mineral.
This page provides mineralogical data about Jonesite.
Unique Identifiers
Mindat ID:
2112
Long-form identifier:
mindat:1:1:2112:4
GUID
(UUID V4):
(UUID V4):
be0e59e1-cb80-422a-bd6c-9da7fef17843
IMA Classification of Jonesite
Approved
IMA Formula:
KBa2Ti2(Si5Al)O18 · nH2O
First published:
1977
Classification of Jonesite
9.DJ.30
9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
61.2.2.1
61 : CYCLOSILICATES Six-Membered Rings
2 : Six-Membered Rings with Al substituted rings
61 : CYCLOSILICATES Six-Membered Rings
2 : Six-Membered Rings with Al substituted rings
16.14.6
16 : Silicates Containing Aluminum and other Metals
14 : Aluminosilicates of Ti, Zr, Sn and Pb
16 : Silicates Containing Aluminum and other Metals
14 : Aluminosilicates of Ti, Zr, Sn and Pb
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Jon | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Jonesite
Transparency:
Transparent, Translucent
Colour:
Colorless
Hardness:
3 - 4 on Mohs scale
Cleavage:
Distinct/Good
{010}
{010}
Fracture:
Irregular/Uneven
Density:
3.25(1) g/cm3 (Measured) 3.17 g/cm3 (Calculated)
Optical Data of Jonesite
Type:
Biaxial (+)
RI values:
nα = 1.641(1) nβ = 1.660(1) nγ = 1.682(1)
2V:
Measured: 76° to 78°
Max Birefringence:
δ = 0.041
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively weak
Chemistry of Jonesite
Mindat Formula:
Ba4(K,Na)2Ti4Al2(Si3O9)2(SiO4)4O2 · 6H2O
Common Impurities:
B,Fe,Nb,Mn,Mg,Ca,Sr
Crystallography of Jonesite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/m
Setting:
P2/m
Cell Parameters:
a = 8.6945(14) Å, b = 25.918(4) Å, c = 10.618(2) Å
Ratio:
a:b:c = 0.335 : 1 : 0.41
Unit Cell V:
0.00 ų (Calculated from Unit Cell)
Z:
4
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0003405 | Jonesite | Krivovichev S V, Armbruster T (2004) The crystal structure of jonesite, Ba2(K,Na)[Ti2(Si5Al)O18(H2O)](H2O)n: A first example of titanosilicate with porous double layers American Mineralogist 89 314-318 |  | 2004 | Benitoite mine, New Idria District, San Benito Co., California, USA | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 12.95 Å | (100) |
| 3.031 Å | (45) |
| 2.652 Å | (30) |
| 2.228 Å | (20) |
| 3.008 Å | (18) |
| 2.073 Å | (18) |
| 2.596 Å | (17) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| High-𝑇 alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits |
Type Occurrence of Jonesite
General Appearance of Type Material:
Rosettes of bladed crystals
Place of Conservation of Type Material:
University of California, Santa Barbara, California, 7325.
American Museum of Natural History, New York, New York, USA.
American Museum of Natural History, New York, New York, USA.
Associated Minerals at Type Locality:
Reference:
Wise, W.S., Pabst, A., Hinthorne, J.R. (1977) Jonesite a new mineral from the Benitoite Gem mine, San Benito County, California. The Mineralogical Record: 8: 453-456.
Synonyms of Jonesite
Other Language Names for Jonesite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 9.DJ.05 | Narsarsukite | Na4(Ti,Fe)2[Si8O20](O,OH,F)2 |
| 9.DJ.10 | Laplandite-(Ce) | Na4CeTiPO4Si7O18 · 5H2O |
| 9.DJ.15 | Caysichite-(Y) | (Ca,Yb,Er)4Y4(Si8O20)(CO3)6(OH) · 7H2O |
| 9.DJ.20 | Seidite-(Ce) | Na4(Ce,Sr)2[TiSi8O18(OH)2](O,OH,F)4 · 5H2O |
| 9.DJ.25 | Carlosturanite | (Mg,Fe,Ti)21(Si,Al)12O28(OH)34 · H2O |
Fluorescence of Jonesite
Orange yellow in SW; weak orange yellow in LW
Other Information
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 Jonesite
mindat.org URL:
https://www.mindat.org/min-2112.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Jonesite
Reference List:
Wise, William S., Pabst, Adolf (1977) Jonesite: a New Mineral from the Benitoite Gem Mine, San Benito County, California. The Mineralogical Record, 8 (6) 453-456
Localities for Jonesite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Atlantic Ocean | |
| Gablina et al. (2006) |
Slovakia | |
| Ďuďa |
USA (TL) | |
| Van Nostrand Reinholt Press: 472. +3 other references |
| - (2005) |
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California State Gem Mine, Santa Rita Peak, San Benito County, California, USA