Paste-up street art by Daddy Street Fox, seen in London, England.
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Paste-up street art by Daddy Street Fox, seen in London, England.
Palygorskite from Washington State, USA.
A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 6100 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
The silicates are the most abundant and chemically complex group of minerals. All silicates have silica as the basis for their chemistry. "Silica" refers to SiO2 chemistry. The fundamental molecular unit of silica is one small silicon atom surrounded by four large oxygen atoms in the shape of a triangular pyramid - this is the silica tetrahedron - SiO4. Each oxygen atom is shared by two silicon atoms, so only half of the four oxygens "belong" to each silicon. The resulting formula for silica is thus SiO2, not SiO4.
Palygorskite is a clay mineral. “Clay” has more than one meaning in geology, which is unfortunate. Clay refers to a group of silicate minerals that result from chemical weathering of other silicate minerals. Clay also refers to very fine-grained sediments (each grain is less than 1/256 of a millimeter in size). Common clay minerals include kaolinite, montmorillonite/smectite, and illite.
Palygorskite is hydrous magnesium aluminosilicate, (Mg,Al)2Si4O10(OH)·4H2O, having a nonmetallic luster, is variably colored, has a white streak, is fairly soft (H = around 2), has flattish & flexible crystals, and one good cleavage. It occurs as flattish crystals, as earthy masses, or in a finely fibrous form. Palygorskite has distinctive "mountain leather" and "mountain paper" varieties.
Locality: undisclosed / unrecorded site at or near the town of Metaline Falls, Pend Oreille County, far-northeastern Washington State, USA
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Photo gallery of palygorskite:
www.mindat.org/gallery.php?min=3072
Paste-up street art by Daddy Street Fox, seen in London, England.
(Wayne State University collection, Detroit, Michigan, USA)
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A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 6100 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
The silicates are the most abundant and chemically complex group of minerals. All silicates have silica as the basis for their chemistry. "Silica" refers to SiO2 chemistry. The fundamental molecular unit of silica is one small silicon atom surrounded by four large oxygen atoms in the shape of a triangular pyramid - this is the silica tetrahedron - SiO4. Each oxygen atom is shared by two silicon atoms, so only half of the four oxygens "belong" to each silicon. The resulting formula for silica is thus SiO2, not SiO4.
Palygorskite is a clay mineral. “Clay” has more than one meaning in geology, which is unfortunate. Clay refers to a group of silicate minerals that result from chemical weathering of other silicate minerals. Clay also refers to very fine-grained sediments (each grain is less than 1/256 of a millimeter in size). Common clay minerals include kaolinite, montmorillonite/smectite, and illite.
Palygorskite is hydrous magnesium aluminosilicate, (Mg,Al)2Si4O10(OH)·4H2O, having a nonmetallic luster, is variably colored, has a white streak, is fairly soft (H = around 2), has flattish & flexible crystals, and one good cleavage. It occurs as flattish crystals, as earthy masses, or in a finely fibrous form. Palygorskite has distinctive "mountain leather" and "mountain paper" varieties.
------------------------------------------
Photo gallery of palygorskite:
www.mindat.org/gallery.php?min=3072
(Wayne State University collection, Detroit, Michigan, USA)
------------------------------------
A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 6100 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
The silicates are the most abundant and chemically complex group of minerals. All silicates have silica as the basis for their chemistry. "Silica" refers to SiO2 chemistry. The fundamental molecular unit of silica is one small silicon atom surrounded by four large oxygen atoms in the shape of a triangular pyramid - this is the silica tetrahedron - SiO4. Each oxygen atom is shared by two silicon atoms, so only half of the four oxygens "belong" to each silicon. The resulting formula for silica is thus SiO2, not SiO4.
Palygorskite is a clay mineral. “Clay” has more than one meaning in geology, which is unfortunate. Clay refers to a group of silicate minerals that result from chemical weathering of other silicate minerals. Clay also refers to very fine-grained sediments (each grain is less than 1/256 of a millimeter in size). Common clay minerals include kaolinite, montmorillonite/smectite, and illite.
Palygorskite is hydrous magnesium aluminosilicate, (Mg,Al)2Si4O10(OH)·4H2O, having a nonmetallic luster, is variably colored, has a white streak, is fairly soft (H = around 2), has flattish & flexible crystals, and one good cleavage. It occurs as flattish crystals, as earthy masses, or in a finely fibrous form. Palygorskite has distinctive "mountain leather" and "mountain paper" varieties.
------------------------------------------
Photo gallery of palygorskite:
www.mindat.org/gallery.php?min=3072
Paste-up street art by D7606, seen in London, England.
(Wayne State University collection, Detroit, Michigan, USA)
------------------------------------
A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 6100 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
The silicates are the most abundant and chemically complex group of minerals. All silicates have silica as the basis for their chemistry. "Silica" refers to SiO2 chemistry. The fundamental molecular unit of silica is one small silicon atom surrounded by four large oxygen atoms in the shape of a triangular pyramid - this is the silica tetrahedron - SiO4. Each oxygen atom is shared by two silicon atoms, so only half of the four oxygens "belong" to each silicon. The resulting formula for silica is thus SiO2, not SiO4.
Palygorskite is a clay mineral. “Clay” has more than one meaning in geology, which is unfortunate. Clay refers to a group of silicate minerals that result from chemical weathering of other silicate minerals. Clay also refers to very fine-grained sediments (each grain is less than 1/256 of a millimeter in size). Common clay minerals include kaolinite, montmorillonite/smectite, and illite.
Palygorskite is hydrous magnesium aluminosilicate, (Mg,Al)2Si4O10(OH)·4H2O, having a nonmetallic luster, is variably colored, has a white streak, is fairly soft (H = around 2), has flattish & flexible crystals, and one good cleavage. It occurs as flattish crystals, as earthy masses, or in a finely fibrous form. Palygorskite has distinctive "mountain leather" and "mountain paper" varieties.
------------------------------------------
Photo gallery of palygorskite:
www.mindat.org/gallery.php?min=3072
Donovan Bros. ghost signage, 46 Crispin Street, Spitalfields, London, England. This sign dates from the 1940s. There were five Donovan Brothers in the paper bag business. The Donovan Brothers are still iin the packaging business today, but they moved to larger quarters long ago.
Paste-up street art of a Panda by the artist Culkeeen, on a wall in London, England.
Paste-up street art by D7606 and Silvio Alino, seen in London, England. It depicts Madonna with an eye patch...I think.
Oil pigment print (OilPrint) on manually prepared paper sheet A2 size
Photographer from Germany – Let’s connect!
👉 Visit my website: wuestenigel.com 🌍✨
My first CMYK fish gelatin (fish glue) CHIBA print.
The process involves using Ferric Ammonium Citrate to sensitize a pigmented fish gelatin solution. The development is done in a diluted solution of peroxide.
It is a perfectly harmless alternative for gum printing and therefore an airbrush can be used to apply the solution on paper. That's what I did.
This print is a 6 layers CMY fish gelatin print on a Pt/Pd black layer. The paper used here is a 280x380 mm. sheet of Fabriano Artistico 640.
