	*Coombs, D.S. (1952) Cell size, optical properties and chemical composition of laumontite and leonhardite. With a note on regional occurrences in New Zealand. American Mineralogist, 37 (9-10) 812-830*	Journal (article/letter/editorial)
	There is evidence that heulandite, and locally analcime, may have replaced the glass during diagenesis...(1948), Prehnite e laumontite del Lago Bianco in Val Bavona (Canton Ticino): Atti Soc. ItaI Sci. Nat...., 2, 299). Grr,r.trrr.r.r, P. (1928), Laumontite di Toggiano: Rend. R. Accad. Lincei,8, ser. 6a, 1-2...661 pp. Pactrart, G. (1948),Le zeoliti del granito di Baveno: Perioil'icoMin. Roma,17, 175-188. Pam, C...RossoNr,P. (1935),La laumontite di Val di Perga (Castellina Marittima): Atti (Proc. Verb.)Soc.Toscana
	*Deer, W. A., Howie, R. A., Zussman, J. (1962) Rock-Forming Minerals* (1st ed.) Vol. 4 - Frameweork Silicates. Longman.**	Book (volume)
	the effect of the twin axis on the vertical diads Di and D2 is to bring each into almost exact coincidence...(“potash—anorthoclase”), tuffaceous liparite, Taiji Kii province, Japan (Kimizuka, 1932) (Includes P2O5 0-03)....E. Spencer. 16. Sanidine, Mt. Cimino, Viterbo, Italy (Spencer, 1937, p. 476 footnote). Anal. E. Spencer...6. Crystals of anorthoclase, tuff, Monte Guardia di Mezzo, Ustioa, Sicily (Montalto, 1937) Gem0l°’ *...gneiss, Mt. Forno, Val* Devero Ossola Piedmont, Italy (Azzini, 1933). 8. Adularia, Val Cristallina, Grisons

Analcime from Val di Perga, Castellina Marittima, Pisa Province, Tuscany, Italy