Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Our Science Mindat Newsletter [Free Download]Contact Us

Donate to Mindat Sponsor a Page Corporate Sponsorship Sponsored Pages

Learning Center What Is a Mineral?The Most Common Minerals on Earth Information for Educators Mindat Articles Mindat Newsletter [Free Download]The Elements The Mineral Quiz

Search Form Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Minerals by Country Alphabetical Mineral Index Alphabetical Locality Search Mineral Association Search List of Countries Localities Near Me Photo Search Search Articles Search Glossary The Rock H. Currier Digital Library More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Minerals Petrology Fossils Meteorites Geologic Time

Mining Companies Statistics Mineral Museums Clubs & Organizations Mineral Shows & Events Device Settings Time Machine

Read Discussions Identification Request

Photo Search Photo Galleries Search by Colour Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Tephritoid

A rock classification type

This page is currently not sponsored. Click here to sponsor this page.

Photos of Tephritoid (13)Recorded Ages and Analyses Discuss Tephritoid

Tephritoid Gallery Search Photos of Tephritoid

Edit Tephritoid Add Synonym Add Sub-type (rock)Edit CIF structures Clear Cache

Leucite-tephrite

Benešov nad Ploučnicí, Děčín District, Ústí nad Labem Region, Czech Republic

Tephrite, etc.

Velké Březno, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic

Tephrite, etc.

Velké Březno, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic

Leucite-tephrite

Benešov nad Ploučnicí, Děčín District, Ústí nad Labem Region, Czech Republic

Tephrite, etc.

Velké Březno, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic

Tephrite, etc.

Velké Březno, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic

Leucite-tephrite

Benešov nad Ploučnicí, Děčín District, Ústí nad Labem Region, Czech Republic

Tephrite, etc.

Velké Březno, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic

Hide all sections | Show all sections

About TephritoidHide

Mafites tentatively identified as tephrite, with felsics comprising 10-60% foids and alkali feldspar/total feldspar <0.5, <10% olivine.

Unique IdentifiersHide

Mindat ID:

50703

Long-form identifier:

mindat:1:1:50703:1

Classification of TephritoidHide

Rock
- Igneous rock
  - Normal crystalline igneous rock
    - Fine-grained ("volcanic") normal crystalline igneous rock
      - Basic volcanic rock
        Tephritoid

Tephritic-rock appears in fields 13 and 14 in the QAPF diagram.^TAS

Sub-divisions of TephritoidHide

Tephritoid

View all 67 analyses with additional filters.

Age distributionHide

Recorded ages:

Phanerozoic : 119 ± 3 Ma to 0 Ma - based on 67 recorded ages.

Sample ages:

Sample ID	Recorded age	Geologic Time	Dating method
1	0.26 to 0.01 Ma	Quaternary	K-Ar
2	0.56 Ma	Pleistocene	K-Ar
3	1.2 ± 0.3 Ma	Pleistocene	K-Ar
4	1.8 ± 0.02 Ma	Pleistocene
5	2.5 ± 0.8 to 2.7 ± 0.2 Ma	Cenozoic
6	2.7 ± 0.09 to 2.1 ± 0.4 Ma	Cenozoic	K-Ar
7	4.76 to 1.57 Ma	Cenozoic	K-Ar
8	6.0 ± 0.2 to 6.3 ± 0.2 Ma	Miocene
9	7.7 ± 0.6 to 3.9 ± 0.4 Ma	Neogene	K-Ar on lafa flow rocks
10	8.32 ± 0.19 Ma	Miocene	K-Ar
11	9.97 ± 0.4 to 2.34 ± 0.11 Ma	Cenozoic
12	11 to 7.26 Ma	Miocene	K-Ar
13	13 Ma	Miocene	Ar-Ar
14	14 to 7 Ma	Miocene	K-Ar
15	15 ± 1 Ma	Miocene	K-Ar whole rock
16	21.96 ± 1.36 to 21.61 ± 0.93 Ma	Miocene	K-Ar
17	39.5 ± 1.5 Ma	Eocene	K-Ar
18	48.8 ± 2.1 Ma	Eocene	K-Ar
19	64.92 ± 0.46 to 64.68 ± 0.63 Ma	Paleocene	Ar/Ar
20	119 ± 3 to 99 ± 3 Ma	Cretaceous	K-Ar

Sample references:

ID	Locality	Reference	Notes
1	Mt Melbourne, Victoria Land, East Antarctica, Antarctica	Armstrong, Richard Lee (1978) K-Ar dating: Late Cenozoic McMurdo Volcanic Group and dry valley glacial history, Victoria Land, Antarctica. New Zealand Journal of Geology and Geophysics, 21 (6) 685-698 doi:10.1080/00288306.1978.10425199
2	Kedong, Kedong County, Qiqihaer, Heilongjiang, China	Zhang, M., Suddaby, P., Thompson, R. N., Thirlwall, M. F., & Menzies, M. A. (1995). Potassic volcanic rocks in NE China: geochemical constraints on mantle source and magma genesis. Journal of Petrology, 36(5), 1275-1303.
3	Shavaryn Tsaram, Tariat Volcanic Province, Hangai highland, Arkhangai Province, Mongolia	Lesnov, F.P., Agafonov, L.V., Pinus, G.V. & Lipovsky, Y.O. 1976. On original moissanite find in Mongolia. Academy of Sciences of the USSR, Siberian Branch, Geology and Geophysics, 6, 119-122.	from nepheline-leucite basanite
4	Kaula Island, Kauai County, Hawaii, USA	Garcia, Michael O., Frey, Frederick A., Grooms, David G. (1986) Petrology of volcanic rocks from Kaula Island, Hawaii. Contributions to Mineralogy and Petrology, 94 (4) 461-471 doi:10.1007/bf00376339
5	Hornpipe Heights, Alexander Island, West Antarctica, Antarctica	Hole, M. J., & Thomson, J. W. (1990). Mount Pinafore-Debussy Heights.
6	Brown Peninsula, Ross Archipelago, Victoria Land, East Antarctica, Antarctica	Kyle, P. R., Adams, J., & Rankin, P. C. (1979). Geology and petrology of the McMurdo volcanic group at Rainbow Ridge, Brown Peninsula, Antarctica. Geological Society of America Bulletin, 90(7), 676-688.
7	Taylor Valley, McMurdo Dry Valleys, Victoria Land, East Antarctica, Antarctica	LeMasurier, W. E., Thomson, J. W., Baker, P. E., Kyle, P. R., Rowley, P. D., Smellie, J. L., & Verwoerd, W. J. (1990).
8	Debussy Heights, Alexander Island, West Antarctica, Antarctica	Hole, M. J., & Thomson, J. W. (1990). Mount Pinafore-Debussy Heights.
9	Mount Pinafore, Alexander Island, West Antarctica, Antarctica	Hole, M. J., & Thomson, J. W. (1990). Mount Pinafore-Debussy Heights.
10	Biga Peninsula, Balikesir Province, Turkey	Aldanmaz, E, Pearce, J.A, Thirlwall, M.F, Mitchell, J.G (2000) Petrogenetic evolution of late Cenozoic, post-collision volcanism in western Anatolia, Turkey. Journal of Volcanology and Geothermal Research, 102 (1) 67-95 doi:10.1016/s0377-0273(00)00182-7
11	Hobbs Coast, Marie Byrd Land, West Antarctica, Antarctica	Hart, S. R., Blusztajn, J., LeMasurier, W. E., & Rex, D. C. (1997). Hobbs Coast Cenozoic volcanism: implications for the West Antarctic rift system. Chemical Geology, 139(1-4), 223-248.
12	Minna Bluff, Victoria Land, East Antarctica, Antarctica	LeMasurier, W. E., Thomson, J. W., Baker, P. E., Kyle, P. R., Rowley, P. D., Smellie, J. L., & Verwoerd, W. J. (1990).
13	Jingyuhu, Ruoqiang Co., Bayin'gholin Autonomous Prefecture, Xinjiang, China	Guo, Z., Wilson, M., Liu, J., & Mao, Q. (2006). Post-collisional, potassic and ultrapotassic magmatism of the northern Tibetan Plateau: Constraints on characteristics of the mantle source, geodynamic setting and uplift mechanisms. Journal of Petrology, 47(6), 1177-1220.
14	Hessian Depression, Kassel Region, Hesse, Germany	Wedepohl, K. H. (1982). K
15	Southeastern dikes, Alexander Island, West Antarctica, Antarctica	Rex, D. C. (1970). Age of a camptonite dyke from south-east Alexander Island. British Antarctic Survey Bulletin, 23, 1-103
16	Winna Góra quarry, Piotrowice, Gmina Męcinka, Jawor County, Lower Silesian Voivodeship, Poland	Birkenmajer, K., Jele?ska, M., K?dzio?ko-Hofmokl, M., & Kruczyk, J. (1977). Age of deep-seated fracture zones in Lower Silesia (Poland), based on K-Ar and palaeomagnetic dating of Tertiary basalts. In Annales Societatis Geologorum Poloniae (Vol. 47, No. 4, pp. 545-552).
17	Okruglica Volcanic Breccia, Svrljig, Nišava District, Central Serbia, Serbia	Jovanovic, M., Downes, H., Pecskay, Z., Cvetkovic, V., Prelevic, D., & Vaselli, O. (2001). Paleogene mafic alkaline volcanics rocks of East Serbia. Acta Vulcanologica, 13, 159-173.
18	Sokobanja Volcanic Field, Sokobanja, Zaječar District, Central Serbia, Serbia	Jovanovic, M., Downes, H., Pecskay, Z., Cvetkovic, V., Prelevic, D., & Vaselli, O. (2001). Paleogene mafic alkaline volcanics rocks of East Serbia. Acta Vulcanologica, 13, 159-173.
19	Striževac alkaline rock locality, Babušnica, Pirot District, Central Serbia, Serbia	Cvetković, V., Šarić, K., Prelević, D., Genser, J., Neubauer, F., Höck, V., & von Quadt, A. (2013). An anorogenic pulse in a typical orogenic setting: The geochemical and geochronological record in the East Serbian latest Cretaceous to Palaeocene alkaline rocks. Lithos, 180, 181-199.
20	Qarnei Ramon, Makhtesh Ramon, Ramat Negev Regional Council, Beersheba Subdistrict, Southern District, Israel	ang, B., Hebeda, E. H., Priem, H. N. A., Verdurmen, E. A., & Steinitz, G. (1988). K-Ar and Rb-Sr ages of early Cretaceous magmatic rocks from Makhtesh Ramon, southern Israel. Israel Journal of Earth-Sciences, 37(2-3), 65-72.	Seven samples from basanitic lava flows

Synonyms of TephritoidHide

Tephritic-rock

Internet Links for TephritoidHide

mindat.org URL:

https://www.mindat.org/min-50703.html
Please feel free to link to this page.

Search Engines:

Look for Tephritoid on Google

Look for Tephritoid images on Google

Look for Tephritoid on Bing

Look for Tephritoid images on Bing

Look for Tephritoid on DuckDuckGo

Look for Tephritoid images on DuckDuckGo

Look for Tephritoid in the Rock H. Currier Digital Library

References for TephritoidHide

Reference List:

Quick NavTop About Tephritoid Unique Identifiers Classification Sub-divisions Age distribution Synonyms Internet Links References

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 22, 2026 12:24:07 Page updated: July 15, 2026 11:00:59

Go to top of page