Camptonite
A rock classification type
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About Camptonite
A lamprophyre with plagioclase > K-feldspar and feldspars > feldspathoids; similar in composition to nepheline diorite, being composed essentially of plagioclase (usually labradorite) and brown hornblende.
Unique Identifiers
Mindat ID:
48065
Long-form identifier:
mindat:1:1:48065:5
Similar Names
| Comptonite | A synonym of Thomsonite-Ca |
Classification of Camptonite
Sub-divisions of Camptonite
- Camptonite
Mineralogy of Camptonite
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Feldspathoid | A family of rock-forming minerals consisting of aluminosilicates of sodium, potassium, or calcium and having too ... |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Amphibole | A petrological term for Amphibole Supergroup. |
| Feldspar > Alkali Feldspar > K Feldspar | Potassium-dominant feldspars with variable crystal symmetry and Al-Si ordering state; they are a subgroup of ... |
| Mica | A petrological term for Mica Group. |
Pronunciation of Camptonite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Chemical Analysis
Oxide wt%:
| 1 | 2 | |
|---|---|---|
| SiO2 | 43.14 % | 39.75 % |
| Al2O3 | 12.07 % | 15.11 % |
| TiO2 | 3.11 % | 3.97 % |
| Fe2O3 | 2.00 % | 2.00 % |
| FeO | 10.97 % | 11.42 % |
| MgO | 10.32 % | 6.45 % |
| MnO | 0.17 % | 0.22 % |
| Na2O | 2.93 % | 3.66 % |
| CaO | 12.72 % | 13.17 % |
| K2O | 0.95 % | 1.8 % |
| P2O5 | 0.40 % | 1.19 % |
| Total: | 98.78 % | 98.74 % |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Mont Royal, Montréal, Québec, Canada | Wet chemical analysis by G. Woussen and B.M.Gunn. The Fe2O3 percentage is arbitrarily set to 2%. | |
| 2 | " " | Wet chemical analysis by G. Woussen and B.M.Gunn. The Fe2O3 percentage is arbitrarily set to 2%. |
Common Associates
Associations Based on Photo Data:
| 1 photo of Camptonite associated with Sphalerite | ZnS |
| 1 photo of Camptonite associated with Calcite | CaCO3 |
| 1 photo of Camptonite associated with Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| 1 photo of Camptonite associated with Franklinite | Zn2+Fe3+2O4 |
| 1 photo of Camptonite associated with Willemite | Zn2SiO4 |
| 1 photo of Camptonite associated with Hematite | Fe2O3 |
| 1 photo of Camptonite associated with Feldspar Group |
Internet Links for Camptonite
mindat.org URL:
https://www.mindat.org/min-48065.html
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References for Camptonite
Reference List:
Campbell, Ian, Schenk, Edward T. (1950) Camptonite dikes near Boulder Dam, Arizona. American Mineralogist, 35 (9-10) 671-692
Johnstone, G. S., Wright, J. E. (1951) The Camptonite-Monchiquite Suite of Loch Eil. Geological Magazine, 88 (2) 148 doi:10.1017/s0016756800069119
Upton, B.G.J (1965) The petrology of a camptonite sill in South Greenland. Bulletin Grønlands Geologiske Undersøgelse, 50. 1-19 doi:10.34194/bullggu.v50.6584
Velde, Danielle, Tournon, Jean (1970) La camptonite de San Feliú de Buxalleu (province de Gérone, Espagne) Bulletin de Minéralogie, 93 (4) 482-487 doi:10.3406/bulmi.1970.6497
Brown, John Flett (1975) Potassium-Argon evidence of a Permian age for the camptonite dykes: Orkney. Scottish Journal of Geology, 11 (3) 259-262 doi:10.1144/sjg11030259
Baxter, A. N., Mitchell, J. G. (1984) Camptonite-Monchiquite dyke swarms of Northern Scotland; Age relationships and their implications. Scottish Journal of Geology, 20 (3) 297-308 doi:10.1144/sjg20030297
Tulloch, A. J., Nathan, S. (1990) Spinel harzburgite xenoliths in alkali basalt and camptonite from North Westland and southeast Nelson, New Zealand. New Zealand Journal of Geology and Geophysics, 33 (4) 529-534 doi:10.1080/00288306.1990.10421370
Le Maitre, R. W. - Ed. (2002) Igneous Rocks - A Classification and Glossary of Terms (2nd ed.) Cambridge University Press. doi:10.1017/cbo9780511535581
Carraro, Anna, Vison, Dario (2003) Mantle xenoliths in Triassic camptonite dykes of the Predazzo Area (Dolomites, Northern Italy): petrography,mineral chemistry and geothermobarometry. European Journal of Mineralogy, 15 (1) 103-115 doi:10.1127/0935-1221/2003/0015-0103
Ross, Martin E. (2010) An Early Triassic 40Ar/39Ar age for a camptonite dyke in Cambridge, Massachusetts. Atlantic Geology, 46. 127-135 doi:10.4138/atlgeol.2010.007
Gibsher, A. A., Malkovets, V. G., Litasov, K. D., Litasov, Yu. D., Pokhilenko, N. P. (2010) Composition of the Ordovician lithospheric mantle: Evidence from the study of peridotite xenoliths from camptonite of the Sangilen highland, central Asian fold belt. Doklady Earth Sciences, 433 (1) 957-961 doi:10.1134/s1028334x1007024x
Gibsher, A. A., Mal’kovets, V. G., Kuz’min, D. V., Litasov, Yu. D., Bazhan, I. S., Pokhilenko, N. P. (2013) Diffusion of elements in peridotite at the contact with a pyroxene-phlogopite vein: An example of xenolith from camptonite of the Sangilen highland. Doklady Earth Sciences, 448 (1) 138-142 doi:10.1134/s1028334x1212015x
Batki, Anikó, Pál-Molnár, Elemér, Dobosi, Gábor, Skelton, Alasdair (2014) Petrogenetic significance of ocellar camptonite dykes in the Ditrău Alkaline Massif, Romania. Lithos, 200. 181-196 doi:10.1016/j.lithos.2014.04.022
Gibsher, A. A., Mal’kovets, V. G., Kuz’min, D. V., Pokhilenko, N. P. (2014) Multistage metasomatic enrichment of the lithospheric mantle beneath the Sangilen highland: Evidence from contact xenoliths from camptonite dykes. Doklady Earth Sciences, 454 (2) 199-203 doi:10.1134/s1028334x14020202
Martin, Robert F., Alarie, Éric, Minarik, William G., Wáczek, Zsófia, McCammon, Catherine A. (2016) Titanium-Rich Magnesio-Hastingsite Macrocrysts In A Camptonite Dike, Lafarge Quarry, Montreal Island, Québec: Early Crystallization In A Pseudo-Unary System. The Canadian Mineralogist, 54 (1) 65-78 doi:10.3749/canmin.4359
Mama, Ntoumbé, Adama, Amaya, Amadou, Diguim Kepnamou, Bertrand, Mbowou Gambie Isaac, Seguem, Naimou, Ismaïla, Ngounouno (2021) Petrological and Geochemical Studies on the Si-Undersaturated Rocks of the Mount Cameroon: Genesis of the Camptonite and Nephelinite at the Cameroon Hot Line. Open Journal of Geology, 11 (6) 239-252 doi:10.4236/ojg.2021.116014
Franklin Mine, Franklin, Sussex County, New Jersey, USA