Phosphophyllite

Phosphophyllite

Infobox mineral
name = Phosphophyllite
category =
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formula = hydrated zinc phosphate Zn2(Fe,Mn)(PO4)2•4H2O
molweight = 448.40 g mol-1
color = blue-green to colourless
habit = prismatic
system = monoclinic
twinning = common
cleavage = [100] Perfect, [010] Distinct, [102] Distinct
fracture = conchoidal
mohs = 3.5
luster = vitreous
refractive = 1.59-1.62
opticalprop =
birefringence = 0.021
pleochroism =
streak = white
gravity = 3.1
density =
melt =
fusibility =
diagnostic =
solubility =
diaphaneity = transparent
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Phosphophyllite is a rare mineral composed of hydrated zinc phosphate. Its name derives from its chemical composition (phosphate) and the Greek word for "leaf", "phyllon", a reference to its cleavage. [cite web
last =
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title = Phosphophyllite
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url = http://webmineral.com/data/Phosphophyllite.shtml
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doi =
accessdate = 2006-12-16
] It is highly prized by collectors for its rarity and for its delicate bluish green colour. Phosphophyllite is rarely cut because it is fragile and brittle, and large crystals are too valuable to be broken up. [cite book
last = Hall
first = Cally
authorlink =
coauthors =
title = Gemstones
publisher = Dorling Kindersley
date = 1994
location = Great Britain
pages = 127
url =
doi =
id = ISBN 0-7513-1026-3
]

The finest phosphophyllite crystals come from Potosí, Bolivia, but it is no longer mined there. Other sources include New Hampshire, USA and Hagendorf, Bavaria, Germany. It is often found in association with the minerals chalcopyrite and triphylite. [cite web
last =
first =
authorlink =
coauthors =
title = The mineral phosphophyllite
work =
publisher = Amethyst Galleries, Inc
date =
url = http://mineral.galleries.com/minerals/phosphat/phosphop/phosphop.htm
format =
doi =
accessdate = 2006-12-16
]

References


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Look at other dictionaries:

  • phosphophyllite — noun A rare bluish green hydrated zinc phosphate mineral …   Wiktionary

  • phosphophyllite — phos·pho·phyllite …   English syllables

  • phosphophyllite — ˌfäsfō+ noun Etymology: phosph + phyllite : a mineral Zn2(FeMn)PO4)2.4H2O consisting of a hydrous phosphate of zinc, ferrous iron, and manganese and forming colorless or pale blue monoclinic crystals with perfect micaceous cleavage (hardness 3 4 …   Useful english dictionary

  • List of minerals N-R (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

  • List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …   Wikipedia

  • Phosphate minerals — are those minerals that contain the tetrahedrally coordinated phosphate (PO43 ) anion along with the freely substituting arsenate (AsO43 ) and vanadate (VO43 ). Chlorine (Cl ), fluorine (F ), and hydroxide (OH ) anions also fit into the crystal… …   Wikipedia

  • Classification of minerals — This list gives an overview of the classification of minerals (non silicates) and includes mostly IMA recognized minerals and its groupings. This list complements the alphabetical list on List of minerals (complete) and List of minerals. Rocks,… …   Wikipedia

  • фосфофиллит — Редкий минерал (водный фосфат цинка, железа, марганца); коллекционный цветной камень. [Англо русский геммологический словарь. Красноярск, КрасБерри. 2007.] Тематики геммология и ювелирное производство EN phosphophyllite …   Справочник технического переводчика

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