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DIC_ROCK_NAMEV3 (3025 rows)
Dictionary table which is part of version 3 of the BGS Rock Classification Scheme. The main part of the RCS - it contains only single lithologies.

Displaying rows 2126 to 2145 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	TRANSFER	DEFINITION_BKING	STATUS
2126	NEI	Nephelinite - A foidite in which the dominant feldspathoid mineral is nepheline. British Geological Survey Research Report RR/99/06, section 5.2.	R	Nephelinite			GRBA	24-FEB-00	TMCM	22-FEB-19		Fine-grained, av. <0.25mm normal crystalline intrusive rock; feldspathoids nepheline (dominant/only) >90%, feldspar <10% of QAPF, +/- mica/pyroxene	C
2127	NEO	Nephelinolite - A foidolite in which the dominant feldspathoid mineral is nepheline. British Geological Survey Research Report RR/99/06, section 5.1 and fig. 9.	R	Nephelinolite			GRBA	24-FEB-00	TMCM	22-FEB-19		Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; felspathoids nepheline (dominant/only) >60%, feldspar <40% of QAPF +/- mica/pyroxene	C
2128	NMGBH	Nepheline-melagabbro, hornblende	U	Hornblende nepheline-melagabbro	hornblende		AWEL	22-MAR-04	TMCM	31-AUG-18		Not Available	C
2129	NMZGB	Nepheline-monzogabbro - A foid-monzogabbro in which the dominant feldspathoid mineral is nepheline. British Geological Survey Research Report RR/99/06, section 5.1 and fig. 9.	R	Nepheline-monzogabbro			AWEL	02-JUL-01	TMCM	22-FEB-19		Not Available	C
2130	NMZSY	Nepheline-monzosyenite - A foid-monzosyenite in which the dominant feldspathoid mineral is nepheline. British Geological Survey Research Report RR/99/06, section 5.1 and fig. 9.	R	Nepheline-monzosyenite			AWEL	17-DEC-04	TMCM	22-FEB-19		Coarse-grained, av. between 2-16mm normal crystalline intrusive with feldspathoids, nepheline (dominant)10-60% of QAPF, feldspar 50-90% alkali feldspar; +/-mica/amphibole/pyroxene/olivine	C
2131	NO	Norite - A type of gabbro. In the Rock Classification Scheme, it is a gabbro with 10 - 90% plagioclase, <5% olivine and 5 - 90% pyroxene (<5% clinopyroxene) of plagioclase + olivine + pyroxene. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 13, 14.	R	Norite			GRBA	24-FEB-00	TMCM	22-FEB-19		Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; quartz <5% of QAPF, feldspar >90% plagioclase (>50% An), 10-90% plagioclase, <5% olivine & 5-90% pyroxene, (<5% clinopyroxene) of Plag+Ol+Px, +/- mica/amphibole; formerly Hyperite	C
2132	NODL	Nodules (undifferentiated)	-	Nodules (undifferentiated)			TMCM	29-MAY-20			I	Not Available	O
2133	NOQB	Norite, quartz-biotite	U	Quartz-biotite norite	quartz	biotite	GRBA	24-FEB-00	TMCM	31-AUG-18		Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; quartz 5-20% of QAPF, feldspar >90% plagioclase (>50% An); 10-90% plag, <5% olivine & 5-90% pyroxene (<5% clinopyroxene), of Plag+Ol+Px, biotite 5-20%, quartz	C
2134	NSCRET	Silcrete, nodular	U	Nodular silcrete	nodular		DJLO	07-APR-06	TMCM	31-AUG-18		Not Available	C
2135	NSLSD	Non-clastic siliceous sediment - In the Rock Classification Scheme, these are sediments which are composed of more than 50% silica of biogenic or chemical origin. This is the unlithified equivalent of siliceous rock. British Geological Survey Research Report RR/99/03, section 8.1 and fig. 12.	A	Non-clastic siliceous sediment			GRBA	24-FEB-00	TMCM	08-MAR-19		Not Available	C
2136	NSLT	Non-carbonate salt - British Geological Survey Research Report RR/99/03, section 7 and fig. 11.	A	Non-carbonate salt			AWEL	08-JUN-01	TMCM	08-MAR-19		Sediments & sedimentary rock, crystals >50%; Sulphates; gypsum, anhydrite, barite, polyhalite, kierserite, kainite. or Chlorides; halite, sylvite, carnallite. or Borates; borax, kernite, ulexite, colemanite. Crystal size not defined. Mainly evaporites.	C
2137	NSY	Nepheline-syenite - A foid-syenite in which the dominant feldspathoid mineral is nepheline. British Geological Survey Research Report RR/99/06, section 5.1 and fig. 9.	R	Nepheline-syenite			AWEL	02-JUL-01	TMCM	22-FEB-19		Not Available	C
2138	NUMELR	Non-ultramafic-melilitic-rock - A type of melilitic rock. In the Rock Classification Scheme, ultramafic-melilitic-rock and non-ultramafic-melilitic-rock are distinguished using colour index M: non-ultramafic-melilitic-rock has M less than 90%. British Geological Survey Research Report RR/99/06, section 6.2 and fig. 27.	A	Non-ultramafic-melilitic-rock			GRBA	24-FEB-00	TMCM	22-FEB-19		Normal/exotic crystalline extrusive/intrusive rock; CI M >90%; melilite >10%; grain size not defined; melilite prefix to root-name	C
2139	OAMPHB	Ortho-amphibolite - A type of metamafic-rock. In the Rock Classification Scheme, it is one composed largely of hornblende and feldspar. This mineralogy reflects amphibolite facies conditions. Note the ortho- prefix indicates a rock that is thought to have an igneous protolith, in contrast with para-amphibolite which has a sedimentary protolith, and amphibolite where the nature of the protolith is not defined. British Geological Survey Research Report RR/99/02, section 5.2.	R	Ortho-amphibolite			GRBA	24-FEB-00	TMCM	22-FEB-19		Crystalloblastic, commonly foliated meta-igneous rock (grain size & protolith undefined); 35-90% mafic minerals, hornblende+plagioclase dominant +/-garnet/biotite/quartz	C
2140	OBS	Obsidian - A type of glassy-igneous-rock. It is a glassy, fresh, igneous rock. The term has no compositional inference. British Geological Survey Research Report RR/99/06, section 8.3.	A	Obsidian			GRBA	24-FEB-00	TMCM	22-FEB-19		Fresh extrusive hypocrystalline, very fine grained, av.< 0.004mm to holohyaline rock; >50% glass; no composition inferred	C
2141	OCHERT	Opaline-chert - A type of chert in which the silica includes amorphous silica (opal-A), opal CT, low-cristobalite and tridymite. British Geological Survey Research Report RR/99/03, section 8.2 and fig. 12.	R	Opaline-chert			GRBA	24-FEB-00	TMCM	08-MAR-19		Non-clastic siliceous sedimentary rock with >50% silica of biogenic or chemical origin, porosity <10% hard, dense with vitreous lustre. Silica, amorphous (opal-A), opal CT, low-cristobalite & tridymite. Dominantly <0.004mm.	C
2142	OCHRR	Olivine-chromite-rock	N	Olivine-chromite-rock			AWEL	17-DEC-04	TMCM	31-AUG-18		Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; olivine33%	C
2143	OCRCU	Olivine-chromite-rock, cumulate	U	Cumulate olivine-chromite-rock	cumulate		AWEL	17-DEC-04	TMCM	31-AUG-18		Coarse-grained av. between 2-16mm normal crystalline intrusive rock commonly with >5mm sub-monomineralic layers; olivine50% of rock	C
2144	OGNAF	Orthogneiss, alkali-feldspar	U	Alkali-feldspar orthogneiss	alkali-feldspar		DJLO	20-SEP-05	TMCM	31-AUG-18		Not Available	C
2145	OGNHB	Orthogneiss, hornblende-bearing	U	Hornblende-bearing orthogneiss	hornblende-bearing		AWEL	26-FEB-01	TMCM	31-AUG-18		Not Available	C

Displaying rows 2126 to 2145 of 3025