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42:, and are usually not found in rocks containing primary quartz. A notable exception where feldspathoids and quartz-bearing rocks are found together is the
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56:, is applied to any igneous rock containing up to 60% modal feldspathoid minerals. For example, a
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replaceable by any foid mineral. Such terminology is used in the
Streckeisen (
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122: – Silica-undersaturated aluminosilicate mineral
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110: – Vitreous white to grey feldspathoidal mineral
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Pages displaying wikidata descriptions as a fallback
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Pages displaying wikidata descriptions as a fallback
128: – Silicate mineral, used in ceramic glazing
38:content. They occur in rare and unusual types of
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34:but have a different structure and much lower
16:Mineral grouping of silica-poor tectosilicates
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213:Allaby, Ailsa; Allaby, Michael (1999).
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188:"The Feldspathoid Group of Minerals"
192:Amethyst Galleries' Mineral Gallery
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158: – Blue tectosilicate mineral
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244:This article about a specific
215:A Dictionary of Earth Sciences
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166: – tectosilicate mineral
149: – tectosilicate mineral
98: – Tectosilicate mineral
92: – Tectosilicate mineral
252:. You can help Knowledge by
104: – Feldspathoid mineral
52:, a contraction of the term
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194:. Amethyst Galleries, Inc
66:nepheline-bearing syenite
137: – Silicate mineral
64:present can be termed a
219:Oxford University Press
309:Silicate mineral stubs
84:Feldspathoid minerals
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70:nepheline syenite
60:with significant
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246:silicate mineral
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54:feldspathoid
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293:Categories
174:References
102:Cancrinite
164:Tugtupite
120:Nepheline
108:Kalsilite
90:Afghanite
74:nepheline
62:nepheline
32:feldspars
156:Sodalite
141:Lazurite
126:Petalite
96:Analcime
28:minerals
114:Leucite
58:syenite
147:Nosean
135:Hauyne
36:silica
248:is a
198:6 Jul
250:stub
200:2015
78:QAPF
50:Foid
19:The
68:or
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281:e
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