Danburite
Danburite is a calcium boron silicate mineral with a chemical formula of CaB2(SiO4)2. It has a Mohs hardness of 7 to 7.5 and a specific gravity of 3.0. The mineral has an orthorhombic crystal form. It is usually colourless, like quartz, but can also be either pale yellow or yellowish-brown. It typically occurs in contact metamorphic rocks. The Dana classification of minerals categorizes danburite as a sorosilicate, while the Strunz classification scheme lists it as a tectosilicate; its structure can be interpreted as either.
primaryTopic
Danburite
Danburite is a calcium boron silicate mineral with a chemical formula of CaB2(SiO4)2. It has a Mohs hardness of 7 to 7.5 and a specific gravity of 3.0. The mineral has an orthorhombic crystal form. It is usually colourless, like quartz, but can also be either pale yellow or yellowish-brown. It typically occurs in contact metamorphic rocks. The Dana classification of minerals categorizes danburite as a sorosilicate, while the Strunz classification scheme lists it as a tectosilicate; its structure can be interpreted as either.
has abstract
Danburit ist ein Mineral aus d ...... ch muscheligen, spröden Bruch.
@de
Danburite is a calcium boron s ...... 839 by Charles Upham Shephard.
@en
Danburyt – nazwa minerału jest ...... do minerałów bardzo rzadkich.
@pl
Het mineraal danburiet is een ...... behoort tot de sorosilicaten.
@nl
La danburite est une espèce mi ...... e (it) et de la pekovite (it).
@fr
La danburite è un minerale appartenente al gruppo omonimo.
@it
Tiene una dureza de Mohs de 7 ...... 39 por Charles Upham Shephard.
@es
Данбури́т — редкий коллекционн ...... искусственный красный корунд.
@ru
thumbnail
Wikipage page ID
Wikipage revision ID
736,050,973
birefringence
Caption
Danburite 35×28×21 cm
cleavage
colour
Colourless, white, gray, brownish white, straw yellow
dana
diaphaneity
Transparent to translucent
dispersion
fluorescence
Fluorescent and thermoluminescent ; Short UV=violet blue; Long UV=blue to blue-green
fracture
Subconchoidal to uneven
gravity
habit
Euhedral prismatic crystals; disseminated masses
lustre
Vitreous – greasy
opticalprop
refractive
nα = 1.627 – 1.633 nβ = 1.630 – 1.636 nγ = 1.633 – 1.639
symmetry
Space group: Pnam
system
Dipyramidal class
tenacity
unit cell
a = 8.038, b = 8.752
c = 7.73 [Å]; Z = 4
comment
Danburit ist ein Mineral aus d ...... der massige Mineral-Aggregate.
@de
Danburite is a calcium boron s ...... can be interpreted as either.
@en
Danburyt – nazwa minerału jest ...... do minerałów bardzo rzadkich.
@pl
Het mineraal danburiet is een ...... behoort tot de sorosilicaten.
@nl
La danburite est une espèce mi ...... e (it) et de la pekovite (it).
@fr
La danburite è un minerale appartenente al gruppo omonimo.
@it
Tiene una dureza de Mohs de 7 ...... interpretada como cualquiera.
@es
Данбури́т — редкий коллекционн ...... искусственный красный корунд.
@ru
label
Danburiet
@nl
Danburit
@de
Danburite
@en
Danburite
@es
Danburite
@fr
Danburite
@it
Danburyt
@pl
Данбурит
@ru
wasDerivedFrom
isPrimaryTopicOf
name
Danburite
@en