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Rock

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00021350017271952866833.jpg
Lherzolite

Peridot Mesa, San Carlos, Gila County, Arizona, USA
01466800017272351247701.jpg
Amphibolite

Campana, Canari, Bastia, Haute-Corse, Corsica, France
08412960017272472909286.jpg
Marlstone

Rio delle Marne, Moreschi, Valmozzola, Parma Province, Emilia-Romagna, Italy
07581990017866630086577.jpg
Lherzolite

Peridot Mesa, San Carlos, Gila County, Arizona, USA
04793460017272472914198.jpg
Amphibolite

Campana, Canari, Bastia, Haute-Corse, Corsica, France
09676970017271952738884.jpg
Marlstone

Rio delle Marne, Moreschi, Valmozzola, Parma Province, Emilia-Romagna, Italy
00021350017271952866833.jpg
Lherzolite

Peridot Mesa, San Carlos, Gila County, Arizona, USA
01466800017272351247701.jpg
Amphibolite

Campana, Canari, Bastia, Haute-Corse, Corsica, France
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About RockHide

A rock is a naturally-occurring solid aggregate of one or more minerals, mineraloids or, in some cases, organic material. Sediments are the unconsolidated equivalent of these. Other related materials, including some man-made materials, are included within this categorization, along with the major classifications for meteorites.

Strictly, any naturally formed aggregate or mass of mineral matter, whether or not coherent, constituting an essential and appreciable part of the Earth's crust. Ordinarily, a consolidated or coherent and relatively hard, naturally formed mass of mineral matter; stone. In instances, a single mineral forms a rock, such as calcite, serpentine, kaolin, and a few others, but the vast majority of rocks consist of several minerals. It can include glasses and mineraloids eg. obsidian, or solid organic material, e.g., coal.

Reference: American Geosciences Institute


Unique IdentifiersHide

Mindat ID:
50468
Long-form identifier:
mindat:1:1:50468:1

Similar NamesHide

RikkiA synonym of Native Sulphur

Sub-divisions of RockHide

Pronunciation of RockHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom
View all 106 analyses with additional filters.

Age distributionHide

Recorded ages:
Neoarchean to Quaternary : 2580 ± 200 Ma to 0 Ma - based on 106 recorded ages.
Sample ages:
Sample IDRecorded ageGeologic TimeDating method
10.082 ± 0.3 to 0.065 ± 0.1 MaPleistoceneK-Ar
21.1 MaPleistoceneK-Ar
32.6 to 1.8 MaCenozoic
45.332 to 2.588 MaCenozoicgeological evidence
511.9 MaMioceneK-Ar
618.9 to 7.1 MaMioceneK-Ar whole rock
723.2 ± 1.0 to 22.1 ± 0.9 MaCenozoic
835 ± 1.60 MaEoceneK-Ar whole rock
958.4 ± 2.3 MaPaleoceneK-Ar
1070 ± 6 MaLate/Upper CretaceousK-Ar
11107 ± 4 MaEarly/Lower CretaceousK-Ar
12125 ± 4 MaEarly/Lower CretaceousK-Ar
13229 MaLate/Upper TriassicRb-Sr whole rock
14291 ± 6 MaCisuralian
15367.8 ± 4.7 to 362.8 ± 2.2 MaLate/Upper DevonianRb-Sr
16462 MaMiddle OrdovicianSm-Nd isochron
17893 MaTonian
181250 MaEctasianSHRIMP
191685 MaStatherianSm-Nd carbonatite whole rock sample
202580 ± 200 MaNeoarcheanU-Pb zircon
Sample references:
IDLocalityReferenceNotes
1Mount Etinde, Buea, Fako, Southwest Region, Cameroon
Fitton & Dunlop 1985; Fitton 1987
nosean-leucite nephelinite
2  "  "
Fitton, J. G. (1987). The Cameroon line, West Africa: a comparison between oceanic and continental alkaline volcanism. Geological Society, London, Special Publications, 30(1), 273-291. doi.org/10.1144/GSL.SP.1987.030.01.13
3Khanneshin complex, Reg District, Helmand, Afghanistan
Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189
4Mau Volcanic Area, Narok County, Kenya
Williams, L. A. J. (1991). Geology of the Mau area. Report, Geological Survey of Kenya, 96.
5Tokatoka, Kaipara District, Northland Region, New Zealand
Stipp, J. J., Thompson, B. N. (1971) K/Ar ages from the volcanics of Northland, New Zealand. New Zealand Journal of Geology and Geophysics, 14 (2) 403-413 doi:10.1080/00288306.1971.10421933
6West Qinling, Li County, Longnan, Gansu, China
Yu, X. H., Mo, X. X., Flower, M., Su, S. G., & Zhao, X. (2001). Cenozoic kamafugite volcanism and tectonic meaning in west Qinling area, Gansu province. Acta Petrologica Sinica, 17(3), 366-+.
7Fuerteventura, Las Palmas Province, Canary Islands, Spain
Balogh, K., Ahijado, A., Casillas, R., Fernández, C. (1999) Contributions to the chronology of the Basal Complex of Fuerteventura, Canary Islands. Journal of Volcanology and Geothermal Research, 90 (1) 81-101 doi:10.1016/s0377-0273(99)00008-6
8Ozrem occurrence, Gornji Milanovac, Moravica District, Central Serbia, Serbia
Cvetković, V.; Prelević, D.; Downes, H.; Jovanović, M.; Vaselli, O.; Pécskay, Z. (2004) Origin and geodynamic significance of Tertiary postcollisional basaltic magmatism in Serbia (central Balkan Peninsula). Lithos, 73 (3-4). 161-186 doi:10.1016/j.lithos.2003.12.004
9Orbey, Vosges Volcanic Field, Vosges, Grand Est, France
Baranyi, I., Lippolt, H.J. & Todt, W. (1976). KALIUM-ARGON-ALTERSBESTIMMUNGEN AN TERTIAEREN VULKANITEN DES OBERRHEINGRABEN-GEBIETES: II DIE ALTERSTRAVERSE VON HEGAU NACH LOTHRINGEN. Oberrheinische Geologische Abhandlungen, 25, 41-62.
10Osečná Complex, Osečná, Liberec District, Liberec Region, Czech Republic
Pivec, E, Ulrych, J, Höhndorf. A., , Rutsek, J (1998) Melilitic rocks from northern Bohemia: geochemistry and mineralogy. Neues Jahrbuch für Mineralogie - Abhandlungen, 173 (2). 119-154 doi:10.1127/njma/173/1998/119
11Swangkre, West Khasi Hills District, Meghalaya, India
Sarkar, A., Datta, A. K., Poddar, B. C., Bhattacharyya, B. K., Kollapuri, V. K., & Sanwal, R. (1996). Geochronological studies of Mesozoic igneous rocks from eastern India. Journal of Southeast Asian Earth Sciences, 13(2), 77-81.
12Wadi Araba nephelinite occurrences, Suez Governorate, Egypt
Meneisy, M. Y., & MY, M. (1974). POTASSIUM-ARGON AGES OF EGYPTIAN BASALTIC ROCKS. Geologisches Jahrbuch, Hannover, D9, 21-31.
13Datong Occurrence, Pingcheng District, Datong, Shanxi, China
Shao, J. A., Zhang, Y. B., Zhang, L. Q., Mu, B. L., Wang, P. Y., & Guo, F. (2003). Early Mesozoic dike swarms of carbonatites and lamprophyres in Datong area. Acta Petrologica Sinica, 19(1), 93-104.
Based on 2 whole rock samples, biotite and feldspar.
14Exeter Volcanic Series, Exeter, Devon, England, UK
Thorpe, R. S., Cosgrove, M. E., van Calsteren, P. W. C. (1986) Rare earth element, Sr- and Nd-isotope evidence for petrogenesis of Permian basaltic and K-rich volcanic rocks from south-west England. Mineralogical Magazine, 50 (357) 481-489 doi:10.1180/minmag.1986.050.357.11
15Sokli carbonatite complex, Tulppio, Savukoski, Lapland, Finland
Kramm, U., Kogarko, L.N., Kononova, V.A., Vartiainen, H. (1993) The Kola Alkaline Province of the CIS and Finland: Precise RbSr ages define 380–360 Ma age range for all magmatism. Lithos, 30 (1) 33-44 doi:10.1016/0024-4937(93)90004-v
16Pinghe, Nanjiang Co., Bazhong, Sichuan, China
Zhou, L. D., Zhao, Z. H., & Zhou, G. F. (1996). Isotopic chronology of some alkaline rock bodies in China. Geochimica, 25(2), 164-171.
17Central Yunnan Province, Yuanmou County, Chuxiong, Yunnan, China
Chengyan, Z. Y. W. H. X., & Qirong, W. (1996). DISCOVERY AND SIGNIFICANCE OF THE CARBONATITE OF KUNYANG GROUP IN THE CENTRAL OF YUNNAN [J]. GEOLOGICAL SCIENCE AND TECHNOLOGY INFORMATION, 15, 14-18.
Recrystallized (metamorphosed) carbonatitic lavas
18Lyons River Sills, Gifford Creek Complex, Mount Augustus area, Upper Gascoyne Shire, Western Australia, Australia
Pearson, J.M., Taylor, W.R. (1996) Mineralogy and geochemistry of fenitized alkaline ultrabasic sills of the Gifford Creek Complex, Gascoyne Province, Western Australia. The Canadian Mineralogist, 34, 201-220.
19Central Yunnan Province, Yuanmou County, Chuxiong, Yunnan, China
Chengyan, Z. Y. W. H. X., & Qirong, W. (1996). DISCOVERY AND SIGNIFICANCE OF THE CARBONATITE OF KUNYANG GROUP IN THE CENTRAL OF YUNNAN [J]. GEOLOGICAL SCIENCE AND TECHNOLOGY INFORMATION, 15, 14-18.
20Siilinjärvi Carbonatite Intrusion, Siilinjärvi, North Savo, Finland
Jonathan Patchett, P., Kouvo, Olavi, Hedge, Carl E., Tatsumoto, Mitsunobu (1982) Evolution of continental crust and mantle heterogeneity: Evidence from Hf isotopes. Contributions to Mineralogy and Petrology, 78 (3) 279-297 doi:10.1007/bf00398923

Chemical AnalysisHide

Oxide wt%:
 123
SiO243.14 %39.75 %46.85 %
Al2O312.07 %15.11 %22.30 %
TiO23.11 %3.97 %0.30 %
Fe2O32.00 %2.00 %3.07 %
FeO10.97 %11.42 %2.21 %
MgO10.32 %6.45 %0.09 %
MnO0.17 %0.22 %0.13 %
Na2O2.93 %3.66 %15.76 %
CaO12.72 %13.17 %1.4 %
K2O0.95 %1.8 %3.58 %
P2O50.40 %1.19 %0.03 %
ZrO20.41 %
H2O1.46 %
Cl2.86 %
F0.29 %
CO30.16 %
Total:98.78 %98.74 %100.9 %
Sample references:
IDLocalityReferenceNotes
1Mont Royal, Montréal, Québec, Canada
Woussen, Gerard (1970) La geologie du complexe igne du Mont Royal [The geology of the Mount Royal igneous complex]. The Canadian Mineralogist, 10 (3). p.432-451.
Wet chemical analysis by G. Woussen and B.M.Gunn. The Fe2O3 percentage is arbitrarily set to 2%.
2  "  "
Woussen, Gerard (1970) La geologie du complexe igne du Mont Royal [The geology of the Mount Royal igneous complex]. The Canadian Mineralogist, 10 (3). p.432-451.
Wet chemical analysis by G. Woussen and B.M.Gunn. The Fe2O3 percentage is arbitrarily set to 2%.
3Ilímaussaq complex, Kujalleq, Greenland
Ferguson, John (1970) The differentiation of agpaitic magmas; the Ilimaussaq intrusion, south Greenland. The Canadian Mineralogist, 10 (3). p.335-349.
Average of 7 analyses of naujaite consisting of K‑feldspar/perthite (25.7 vol%), nepheline (9.9 vol%), pyroxenes (6.6 vol%), amphiboles (5.6 vol%), aenigmatite(1.7 vol%), eudialyte (4.9 vol%), sodalite (40.2 vol%), analcime (3.6 vol%), natrolite (1.7 vol%), fluorite (0.1 vol%), apatite (tr), opaques (tr). The analytical method not given, presumably wet chemical.

Internet Links for RockHide

References for RockHide

Reference List:
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