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  References
 

A full list of suitable reference would be several pages in length. The present listing includes research papers and a few texts published over the past 25 years that directly apply to agate and chalcedony. Moganite plays an important role in agate genesis and a few papers on this recently discovered (1976) mineral have now been included.

Blankenberg, H.J.,& Berger, H. (1981) Kristallitgrössenuntersuchungen an Vulkanitachaten.  Chemie der Erde, 40, 139-145.
Blankenberg, H.J, Pilot,J., Werner,C.D. (1982)  Erste Ergbnisse der Sauerstoffisotopenuntersuchungen an Vulkanitachaten und ihre genetische Interpretation. Chemie der Erde,, 41, 213-217.
Cady, S.L., Wenk, H.-R. and Sintubin, M. (1998) Microfibrous quartz varieties: characterization  by quantitative X-ray texture analysis and transmission electron microscopy. Contributions to Mineralogy and Petrology.30, 320-335.
Clark, R. (2002) Fairburn Agate Gem of South Dakota, Silverwind Agates, Appleton, USA. 104 pp.
Cross, B. (1996) The Agates of Northern Mexico, Burgess Publishing,Minnesota, USA. 201 pp
Fallick, A..E., Jocelyn, J.,Donelly,T., Guy, M., Behan, C. (1985) Origin of agates in the volcanic rocks of Scotland. Nature, 313, 672-674.
Fallick, A.E., Jocelyn, J., Hamilton, P.J. (1987): Oxygen and hydrogen isotope systematics in Brazilian agates. In Rodriguez Clemente, E., Tardy, Y. (eds.): Geochemistry and mineral formation in the earth surface, CSIC (Madrid) and CNRS (Paris). pp 99-117.
Flörke, O.W., Jones, J.B., Schmincke, H.U. (1976): A new microcrystalline silica from Gran Canaria. Zeit Krist. 143, 156-165
Flörke, O.W., Köhler-Herbetz, B., Langer, K., Tönges, I. (1982): Water in microcrystalline quartz, of volcanic origin: Agates. Contributions to Mineralogy and Petrology., 80, 324-333.
Frondel, C. (1978) Characters of quartz fibers. American Mineralogist. 63, 17-27.
Fukuda, J. & Nakashima, S. (2008) Water at high temperatures in a microcrystalline silica (chalcedony) by in-situ infrared spectroscopy: physicochemical states and dehydration behavior. Journal of Mineralogical and Petrological Sciences. 103, 112-115.
Gilg, H.A., Morteani, G., Kostitsyn, Y., Preinfalk, C., Gatter, I., Streider, A.J. (2003) Genesis of amethyst geodes in basaltic rocks of the Serra Geral Formation (Ametista do Sul, Rio Grande do Sul, Brazil): a fluid inclusion, REE, oxygen, carbon, and Sr isotope study on basalt, quartz, and calcite. Mineralium. Deposita. 38 (8), 1009-1025.
Gíslason, S.R., Heaney, P.J., Oelkers, E.H. and Schott, J. (1997)  Kinetic and  thermodynamic properties of moganite, a novel silica polymorph. Geochimica et Cosmochimica Acta. 61, 1193-1204.
Götze, J., Nasdala, L., Kleeberg, R. and Wenzel, M (1998) Occurrence and distribution of “moganite” in agate/chalcedony: a combined micro-Raman, Rietveld, and cathodluminescence study. Contributions to Mineralogy and Petrology., 133, 96-105.
Götze, J., Plötze, M.and Habermann, D. (2001) Origin, spectral characteristics and practical applications of the cathodoluminescence (CL) of  quartz – a review. Mineralogy and    Petrology. 71, 225-250.
Götze, J., Plötze, M., Fuchs, H. and Habermann, D. (1999) Defect structure and luminescence behaviour agate-results of electron paramagnetic resonance (EPR) and cathodoluminescence (CL) studies.  Mineralogical. Magazine. 63, 149-163.
Götze, J., Tichomirowa, M., Fuchs, H., Pilot, J. and Sharp, Z.D. 2001. Geochemistry of agates: a trace element and stable isotope study. Chemical  Geology 175, 523-541.
Graetsch, H., 1994. Structural characteristics of opaline and microcrystalline silica minerals. In:Heaney, P.J., Prewitt, C.T. & Gibbs, G.V. (Eds.) Silica. Physical behaviour, geochemistry and materials applications, pp. 209-232.Reviews in Mineralogy 29, Mineralogical Society of  America
Graetsch, H., Flörke, O.W., Miehe, G. (1987): Structural defects in microcrystalline silica. Physics and Chemistry of Minerals 14, 249-257.
Graetsch, H., Flörke, O.W., Miehe, G. (1985): The nature of water in chalcedony and opal-C from Brazilian agate geodes. Physics and Chemistry of Minerals. 12, 300-306.
Graetsch , H. Topalovic, I., Gies, H. (1994): NMR spectra of moganite and chalcedony. European Journal of Mineralogy.  6, 459-464.
Harder,H. (1993): Agates-formation as a multicomponent colloid chemical precipitation at low temperatures. Neues Jahrbuch für Mineralogie- Monatshefte., 1993, H. 1, 3 1-48.
Harris, C. (1989): Oxygen-isotope zonation of agates from Karoo volcanics of the Skeleton coast, Namibia.  American Mineralogist, 74, 476-481.
Heaney, P.J. (1993): A proposed mechanism for the growth of chalcedony. Contributions to Mineralogy and Petrology. 115, 66-74.
Heaney, P.J (1995): Moganite as an indicator for vanished evaporites: a testament reborn? Journal of Sedimentary Research. A65, 4, 633-638.
Heaney, P.J. and Post, J.E. (1992): The widespread distribution of a novel silica polymorph in microcrystalline quartz varieties. Science. 255, 441- 443.
Heaney, P.J. and Post, J.E. (2001): Evidence for an I2/a to Imab phase transition in the silica polymorph moganite at 570 K. American Mineralogist.  86, 1358-1366.
Heaney, P.J., Veblen, D.R. and  Post,J.E. (1994) : Structural disparities between chalcedony and macrocrystalline quartz. American Mineralogist. 79, 452-460.
Holzhey, G. (1997) Origin and formation of agate-bearing spherulites: The Thuringian Forest, Germany. The Australian Gemmologist. 19, 452-459.
Holzhey, G. (1998) Achate aus Sachsen und Thüringen –Ein Überblick zu ihren Vorkommen in Gängen und Vulkaniten. Zeitschrift der Deutschen Gemmologischen Gesellschaft, 47, 199-224. (English abstract).
Holzhey, G. (1999) Mikrokristalline SiO2- Mineralisation in rhyolithischen Rotliegendvulkaniten des Thüringer Waldes (Deutschland) und ihre Genese. Chemie der Erde, 59, 183-205. (English abstract).
Kinnunen, K.A. & Lindqvist, K.(1998) Agate as an indicator of impact structures: an example from Sääksjärvi, Finland. Meteoritics & Planetary Science. 33, 7-12.
Landmesser, M. (1995): Mobility by Metastability: Silica Transport and Accumulation at Low Temperatures. Chemie der  Erde, 55, 149-176.
Landmesser, M (1998): "Mobility by Metastability" in Sedimentary and Agate Petrology : Applications. Chemie der  Erde, 58, 1-22.
Lange, P., Blankenburg, H-J., Schron, W. (1984): Rasterelectronmikroskopische Untersuchgenan Vulkanachaten. Zeitschrift für Geologische Wissenschaften, 12, 669-683.
Macpherson, H.G. (1989) Agates. British Museum.  72p.
Miehe, G. & Graetsch, H. (1992): Crystal structure of moganite: a new structure type for silica European Journal of Mineralogy. 4, 693-706.
Moxon, T. (1991): On the origin of agate with particular reference to fortification agate found in the Midland Valley, Scotland, Chemie der Erde, 51, 251-260
Moxon, T. (1996): The co-precipitation of Fe3+ and SiO2 and its role in agate genesis, Neues Jahrbuch für Mineralogie- Monatshefte . 1996, H. 1, 21-36.
Moxon, T. Agate: microstructure and possible origin, Terra Publications, 106 pp.
Moxon, T. (2001) Liesegang rings. Education in Chemistry, 4, 105-107.
Moxon, T. (2002): Agate: a study of ageing. European Journal of Mineralogy. 14, 1109-1118.
Moxon, T. and Ríos, S. (2004) Moganite and water content as a function of age in agate:   an XRD and thermogravimetric study. European Journal of Mineralogy. 16, 269-278.
Moxon, T. and Reed, S.J.B. (2006) Agate and chalcedony from igneous and sedimentary hosts aged 13 to 3480 Ma: a cathodoluminescence study. Mineralogical Magazine. 70, 485-498.
Moxon, T., Nelson, D.R. and Zhang, M. (2006) Agate recrystallization: evidence from samples found in Archaean and Proterozoic host rocks, Western Australia. Australian Journal of  Earth. Sciences. 53, 235-248.
Moxon, T., Reed, S.J.B., Zhang, M. (2007) Metamorphic effects on agate found near the Shap granite, Cumbria, England: as demonstrated by petrography, X-ray diffraction and spectroscopic methods. Mineralogical Magazine. 71 (4), 461-476.
Moxon, T. and Carpenter. M.A. (2009) Crystallite growth in nanocrystalline quartz (agate and chalcedony).  Mineralogical Magazine73, 551-568.
Neymark, L.A., Amelin, Y., Paces, J.B.,  Peterman, Z.E. 2002. U-Pb ages of secondary silica at Yucca Mountain, Nevada: implications for the paleohydrology of the unsaturated zone. Applied Geochemistry 17, 709-734.
Parthasarathy, G., Kunwar, A.C. and Sprinivasan, R. (2001) Occurrence of moganite-rich chalcedony in the Deccan flood basalts, Killari, Maharashtra, India. European Journal of Mineralogy. 13, 127-134.   
Petrovic I., Heaney, P. J., & Navrotsky, A. (1996). Thermochemistry of the new silica polymorph moganite. Physics and Chemistry of Minerals 23, 119-126.
Rios, S., Salje, E.K.H., and Redfern, S.A.T. (2001):Nanoquartz vs macroquartz: a study of the α ↔ β phase  transition. European Physics Journal B, 20, 75-83.
Yamagishi, H., Nakashima, S., Ito, Y. (1997): High temperature infrared spectra of hydrous microcrystalline quartz. Phys.Chem.Minerals, 24, 66-74.
Zenz, J (2005) Agates, bode, Haltern, Germany, 656 pp