Vaca Muerta, in Spanish “Dead Cow” is a meteorite of mesosiderite type which was discovered in Chile in 1861.
This meteorite would have arrived on Earth about 2000 years ago.
The parent body of mesosiderites could be the asteroid Psyche, it is over 200 km in diameter.
It is a classic in any good collection.
Out of stock
Vaca Muerta, in Spanish “Dead Cow” is a meteorite of mesosiderite type which was discovered in Chile in 1861.
This meteorite would have arrived on Earth about 2000 years ago.
The parent body of mesosiderites could be the asteroid Psyche, it is over 200 km in diameter.
It is a classic in any good collection.
Out of stock
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
Out of stock
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
Out of stock
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
Out of stock
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
Out of stock
NWA 15171 is a rare mesosiderite meteorite.
Mesosiderites are brecciated rocks containing silicate and metallic components, the silicates are mainly fragments of igneous rocks.
Writeup from MB 112:
Northwest Africa 15171 (NWA 15171)
Adrar, Algeria
Purchased: 2022
Classification: Mesosiderite
History: Bought by Jean Redelsperger from Mohamed Elguirah in 2022.
Physical characteristics: Many brown ireggular stones without fusion crust.
Petrography: (J. Gattacceca, CEREGE) The rock contains similar abundances of silicate minerals (pyroxene, and plagioclase), and metal and its weathering products. Silicate grain size is about 200 µm. Plagioclase and low-Ca pyroene dominate over Ca-pyroxene. Fe,Ni metal and troilite have been mostly replaced by terrestrial weathering products.
Geochemistry: Low-Ca pyroxene Fs31.4±2.0Wo3.8±0.2, range Fs29.5-35.9, FeO/MnO = 26.4±4.9 (n=7). Plagioclase An92.5±2.1Ab7.4±2.0Or0.1±0.1 (n=4).
Classification: Achondrite (mesosiderite)
Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.
NWA 10158 is a mesosiderite meteorite.
It is a rare type, but the particularity of NWA 10158 is that it must have arrived on Earth a long time ago for proof of its terrestrialisation.
NWA 10158 does not look like a classical mesosiderite and it is only with a scientific analysis that its exact type has been determined.
This meteorite is nevertheless an aesthetic meteorite, and each cut slice is different.