References - Origin of Potassium-rich Silica-deficient Igneous Rocks - page 494

Rogers NW, Hawksworth CJ, Parker PRJ, Marsh JS (1985) The geochemistry of potassic lavas
from Vulsini, central Italy and implication form mantle enrichment process beneath the Roman
regons. Contrib Mineral Petrol 90:244 - 257
Rogers NW, James D, Kelley SP, De Mulder M (1998) The generation of potassic lavas from the
eastern Virunga Province, Rwanda. J Petrol 39(8):1223 - 1247
Rowell WF, Edgar AD (1983) Cenozoic potassium-rich mafic volcanism in the western USA: its
relationship to deep subduction. J Geol 91:338 - 431
Ryabchikov ID, Green DH (1978) The role of CO 2 in the petrogenesis of highly potassic magmas.
In: Problems of highly potassic Earth ' s crust and upper mantle. Tr Inst Geol Geofiz Akad Nauk

64 (in Russian)
Sack RC, Carmicheal ISE, Rivers ML, Ghiroso MS (1980) Ferric-Ferrous equilibrium in natural
silicate liquids at 1 bar. Contrib Mineral Petrol 75:369

S.S.S.R. No. 403:49

-

376
Sahama ThG (1973) Evolution of Nyiragongo magma. J Petrol 14:33

-

48
Sahama ThG (1974) Potassium-rich alkaline rocks. In: Sorensen H (ed) The Alkaline rocks. Wiley,
London, pp 96

-

100
Sahama ThG, Meyer A (1958) Study of the volcano Nyiragongo, a progress report. Inst. Parcs.
Nationaux Cango Belge, Mission d

-

18
Sahama ThG, Neuvonen KJ, Hytonen K (1956) Determination of the composition of kalsilites by
an X-ray method. Mineral Mag 31:200

' Etudes Vulcanologiques fasc, vol 2. pp 1

-

210
Sahama ThG, Wiik HB (1952) Leucite, potash nepheline and clinopyroxene from volcanic lavas
from southwestern Uganda and adjoining Belgian Cango. Am J Sci (Bowen Vol):457

-

470
Sandiford M, Santosh M (1991) A granulite facies kalsilite-leucite-hibonite association from
Punalur Southern India. Mineral Petrol 43:225

-

236
Sano Y, Takahata N, Nishio Y, Marty B (1998) Nitrogen recycling in subduction zones. Geophys
Res Lett 25:2289 - 2292
Sano Y, Takahata N, Nishio Y, Fischer TP, Williams SN (2001) Volcanic flux of nitrogen from the
Earth. Chem Geol 171:263 - 271
Santi P (1990) New geochronological data of the Vulsini volcanic district (central Italy). Plinius N.
4 Suppl. Euro J Mineral Porc Sci Ital Mineral Petrol Confress. Ischia, Italy, pp 15 - 18
Sato M (1972) Intrinsic oxygen fugacities for iron-bearing oxide and silicate minerals under low
total pressure. Geol Soc Mem 135:289
Savelli C (1967) The problem of rock assimilation by Somma-Vesuvious magma. Contrib Mineral
Petrol 16:328 - 353
Scarf CM, Luth WC, Tuttle OF (1966) An experimental study bearing on the absence of leucite in
plutonic rocks. Am Mineral 51:726

-

735
Schairer JF (1948) Phase equilibrium relations in the quaternary system K 2 O-MgO-Al 2 O 3 -SiO 2
(preliminary report) Bull. Geol Soc Am Abstr 59:1349
Schairer JF (1950) The alkali feldspar join in the system NaAlSiO 4 -KAlSiO 4 -SiO 2 . J Geol
58:512

-

517
Schairer JF (1954) The system K 2 O-MgO-Al 2 O 3 -SiO 2 : I, results of quenching experiments on four
joins in the tetrahedron cordierite-forsterite-leucite-silica and on the join cordierite-mullite-
potash feldspar. J Am Ceram Soc 37:501

-

533
Schairer JF, Bowen NL (1935) Preliminary report on the equilibira relations between
feldspathoids, alkali-feldspars and silica. Trans Am Geophys Union In: 16th Annual Meeting,
325

-

328
Schairer JF, Bowen NL (1938) The system leucite-diopside-silica. Am J Sci 35A(5):289

-

309

-

Schairer JF, Bowen NL (1947) The system anorthite-leucite-SiO 2 . Geol Finl Bull 20:67 87

-

Schairer JF, Bowen NL (1955) The system K 2 O-Al 2 O 3 -SiO 2 . Am J Sci 253:681 746

Schairer JF, Yoder HS (1964) The join akermanite (Ca 2 MgSi 2 O 7 )-sodamelilite (NaCaAlSi 2 O 7 ).
Carnegie Inst Wash Yb 63:89

-

90
Schairer JF, Yagi K, Yoder HS (1962) The system diopside nepheline. Carnegie Inst Wash Yb
61:96 - 98

-