Sweetite
http://dbpedia.org/resource/Sweetite an entity of type: Thing
La sweetita és un mineral de la classe dels òxids. Anomenat així per Jessie May Sweet, conservador de minerals del British Museum.
rdf:langString
Sweetita oxido motako minerala da.
rdf:langString
La sweetite è un minerale.
rdf:langString
Sweetite has a general formula of Zn(OH)2. The name is given after a curator of mineral department of The British Museum, Jessie May Sweet (1901–1979). It occurs in an oxidized vein in limestone bedrock with galena, ashoverite, , anglesite, cerussite, hydrocerussite, litharge, fluorite, palygorskite and calcite. Sweetite is mostly found from a limestone quarry 200–300 m northwest of Milltown, near Ashover, Derbyshire, England.
rdf:langString
rdf:langString
Sweetita
rdf:langString
Sweetita
rdf:langString
Sweetite
rdf:langString
Sweetite
rdf:langString
Sweetite
rdf:langString
Sweetite
xsd:integer
28854252
xsd:integer
1123709078
rdf:langString
White
xsd:integer
4
rdf:langString
V = 968.93 Å3; Z = 20
rdf:langString
a = 8.22, c = 14.34 [Å]
rdf:langString
Hydroxide mineral
rdf:langString
Trapezohedral
rdf:langString
Colorless, white
xsd:double
3.33
rdf:langString
P41212 or P43212
rdf:langString
Unknown space group
rdf:langString
La sweetita és un mineral de la classe dels òxids. Anomenat així per Jessie May Sweet, conservador de minerals del British Museum.
rdf:langString
Sweetita oxido motako minerala da.
rdf:langString
Sweetite has a general formula of Zn(OH)2. The name is given after a curator of mineral department of The British Museum, Jessie May Sweet (1901–1979). It occurs in an oxidized vein in limestone bedrock with galena, ashoverite, , anglesite, cerussite, hydrocerussite, litharge, fluorite, palygorskite and calcite. Sweetite is tetragonal, which means crystallographically it contains one axis of unequal length and two axes of equal length. The angles between three of the axes are all 90°. It belongs to the space group 4/m. Some crystals show evidence of a basal plane and a few are tabular. In terms of its optical properties, sweetite has two indices of refraction, 1.635 along the ordinary ray and 1.628 along the extraordinary ray. The index of refraction is the velocity of light in a vacuum divided by the velocity of light in medium. It also has the birefringence of 0.007. The birefringence means the decomposition of light into two rays when passing through a mineral. Sweetite is 1.64 - 1.65 in relief, which is medium to high in intensity and means a measure of the relative difference between the index of refraction of a mineral and its surrounding medium. Sweetite is mostly found from a limestone quarry 200–300 m northwest of Milltown, near Ashover, Derbyshire, England.
rdf:langString
La sweetite è un minerale.
xsd:double
0.007
rdf:langString
None
rdf:langString
Transparent to translucent
rdf:langString
Zn2
rdf:langString
Irregular
rdf:langString
Bipyramidal
rdf:langString
Sw
rdf:langString
Vitreous
xsd:integer
3
xsd:double
99.40000000000001
rdf:langString
uniaxial
rdf:langString
nω = 1.635 nε = 1.628
xsd:nonNegativeInteger
3978