Nephelinite
A rock classification type
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About Nephelinite
A foidite (fine-grained or aphanitic igneous rock) made up almost entirely of nepheline and augite. If olivine is present, the rock may be classified as an olivine nephelinite). It contains little or no feldspars.
It is a mafic (dark coloured), fine-grained or porphyritic ,extrusive or hypabyssal rock, of basaltic character.
It is a mafic (dark coloured), fine-grained or porphyritic ,extrusive or hypabyssal rock, of basaltic character.
Unique Identifiers
Mindat ID:
48513
Long-form identifier:
mindat:1:1:48513:7
GUID
(UUID V4):
(UUID V4):
1a5c75d5-904c-4cc0-a8f1-532b7481934b
Classification of Nephelinite
Nephelinite appears in field 15c in the QAPF diagram.
Nephelinite is found in field F in the TAS diagram.
Sub-divisions of Nephelinite
Mineralogy of Nephelinite
Essential minerals - these are minerals that are required within the classification of this rock:
Feldspathoid > Nepheline | Na3K(Al4Si4O16) |
Age distribution
Recorded ages:
Cenozoic : 41.4 ± 1.2 Ma to 0.01143 Ma - based on 14 recorded ages.
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Nephelinite associated with Perovskite | CaTiO3 |
1 photo of Nephelinite associated with Fluorapatite | Ca5(PO4)3F |
1 photo of Nephelinite associated with Pyroxene Group | ADSi2O6 |
Internet Links for Nephelinite
mindat.org URL:
https://www.mindat.org/min-48513.html
Please feel free to link to this page.
Please feel free to link to this page.
References for Nephelinite
Reference List:
Localities for Nephelinite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Odenwald, Germany