沸斑岩，又譯方沸响岩、方沸斑岩（英語：Blairmorite） 是一種非常罕見的[1]斑狀喷出岩，[2]以加拿大艾伯塔省西南部的Blairmore社區命名。[3][4]该矿物以方沸石（英語：Analcime）爲主的斑晶、基質礦物爲透长石和鹼性輝石以及方沸石，輔以榍石，钙铁榴石和霞石组成。沸斑岩是一种长英质的方沸石（foidite）。[5]Blairmorite 也是一種富含方沸石的响岩。[6][7]
Blairmorite|
 來自 Crowsnest Formation 的淡方钠岩標本。 琥珀色礦物是方沸石，淺色礦物是 透长石，小的黑色礦物是 钙铁榴石石榴石 |
这种岩石因在世界上独有的兩种地質構造中的特性被学界鉴定为喷出岩：在加拿大阿爾伯塔省的Crowsnest層，它與噴發性的集塊岩和凝灰共生，而莫桑比克的 Lupata峽谷也有类似的情况。[2]
參考文獻
- ^ MacKenzie, W.S., Donaldson, C.H. and Guilford, C. Atlas of igneous rocks and their textures. Harlow: Longman. 1982: 121. ISBN 0-582-30082-7.
- ^ 2.0 2.1 MacKenzie, W.S., Donaldson, C.H. and Guilford, C. (1982). Atlas of igneous rocks and their textures. Harlow: Longman. p. 121. ISBN 0-582-30082-7.
- ^ Pearce, T.H. (1993). "Analcime phenocrysts in igneous rocks: Primary or secondary? – Discussion" (PDF). American Mineralogist. 78: 225–229.
- ^
Johannsen, A. 1933. A descriptive petrography of the igneous rocks, Appendix III, p. 244. Univ. of Chicago Press.
- ^
Le Maitre, R.W. (editor) (2002). Igneous Rocks — A Classification and Glossary of Terms (2nd ed.). Cambridge: Cambridge University Press. pp. 55, 64. ISBN 0-521-66215-X.
- ^
Peterson, T.D.; Currie, K.L. (1993). Analcite-bearing igneous rocks from the Crowsnest Formation, southwestern Alberta (Current Research report 93-B1) (PDF). Geological Survey of Canada. pp. 51–56.
- ^
Deer, W.A.; Howie, R.A.; Zussman, J. (2013). An Introduction to the Rock-Forming Minerals (3rd ed.). London: Mineralogical Society. ISBN 9780903056274.
