Golden yellow botryoidal mimetite from Congreso-León mines, Mexico
General
Category
Arsenate minerals Apatite group
Formula (repeating unit)
Pb5(AsO4)3Cl
IMA symbol
Mim[1]
Strunz classification
8.BN.05
Crystal system
Hexagonal
Crystal class
Dipyramidal (6/m) (same H-M symbol)
Space group
P63/m
Unit cell
a = 10.250(2) Å, c = 7.454(1) Å; Z = 2
Identification
Color
Pale to bright yellow, yellowish brown, yellow-orange, white, may be colorless
Crystal habit
Prismatic to acicular crystals; reniform, botryoidal, globular,
Twinning
Rare on {1122}
Cleavage
[1011] Imperfect
Fracture
Brittle, conchoidal
Tenacity
Brittle
Mohs scale hardness
3.5–4
Luster
Resinous, subadamantine
Streak
White
Diaphaneity
Transparent to translucent
Specific gravity
7.1–7.24
Optical properties
Uniaxial (−), anomalously biaxial
Refractive index
nω = 2.147 nε = 2.128
Birefringence
0.019
Pleochroism
Weak
References
[2][3][4]
Mimetite is a lead arsenate chloride mineral (Pb5(AsO4)3Cl) which forms as a secondary mineral in lead deposits, usually by the oxidation of galena and arsenopyrite. The name derives from the Greek Μιμητής mimetes, meaning "imitator" and refers to mimetite's resemblance to the mineral pyromorphite. This resemblance is not coincidental, as mimetite forms a mineral series with pyromorphite (Pb5(PO4)3Cl) and with vanadinite (Pb5(VO4)3Cl). Notable occurrences are Mapimi, Durango, Mexico and Tsumeb, Namibia.
^Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (eds.). Handbook of Mineralogy(PDF). Chantilly, VA 20151-1110, US: Mineralogical Society of America. Retrieved 12 February 2022.{{cite book}}: CS1 maint: location (link)
^Mimetite, Mindat.org, retrieved 12 February 2021
^Barthelmy, David (2014). "Mimetite Mineral Data". Mineralogy Database. Webmineral.com. Retrieved 12 February 2022.
Mimetite is a lead arsenate chloride mineral (Pb5(AsO4)3Cl) which forms as a secondary mineral in lead deposits, usually by the oxidation of galena and...
Cyrilovite Varieties that are not valid species: Campylite (variety of mimetite) Carnelian (variety of quartz) Cementite (synthetic cohenite) Ceylonite...
formula. This was weird due to the fact that it occurs with the calcium-rich mimetite and was found on a copper ore. Arsendescloizite's type locality is at the...
masses are also found. It is part of a series with two other minerals: mimetite (Pb5(AsO4)3Cl) and vanadinite (Pb5(VO4)3Cl), the resemblance in external...
Campylite is a variety of the lead arsenate mineral mimetite which received the name from the Greek 'kampylos'- bent, on account of the barrel-shaped bend...
especially sandstones. Associated minerals are descloizite, duftite, mimetite, wulfenite, cerussite, azurite and dioptase. Australia, Kintore open cut:...
Tetrahedrite Tetrahedrite crystal with traces of quartz (in middle) and micro mimetite, specimen size 3.5 × 2.5 × 2.5 cm General Category Sulfosalt mineral Formula...
pseudo-cuboctahedral. It occurs in association with carminite, scorodite, mimetite, dussertite, arseniosiderite, pharmacosiderite, olivenite, bayldonite,...
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lead-bearing veins. Associated minerals include dioptase, fornacite, wulfenite, mimetite, cerussite and diaboleite. It was first described in 1970 for an occurrence...
typically in association with raspite, cerussite, anglesite, pyromorphite and mimetite. List of minerals List of minerals named after people Warr, L.N. (2021)...
hemimorphite, plattnerite, aurichalcite, rosasite, fluorite, calcite, wulfenite, mimetite and other species. It is also the type locality for paradamite, lotharmeyerite...
New South Wales, Australia, where some pseudomorphs of duftite after mimetite have also found. It occurs in association with olivenite, mottramite, azurite...
also a member of the apatite group. It is isomorphous with apatite and mimetite. It got its name in 1891 by Hjalmar Sjögren after Anton von Swab. Svabite...
expelled, and the lead oxide is reduced. Anglesite, Cerussite, Pyromorphite, Mimetite and Wulfenite are other lead ores. Other elements frequently present with...
hydrothermal ore deposits and is associated with crocoite, pyromorphite, mimetite, cerussite, beudantite and duftite at the type locality in Russia. Warr...
yellowish-tan mimetite are concentrated at the top of the piece, and the largest wulfenite, at 9 mm, is aesthetically framed by two mimetite crystal clusters...
Level 40 and able to use the "Charm Buster" attack, named for the mineral mimetite. Under the alias of Mimi Hanyu (羽生美々, Hanyū Mimi), she is a pop idol who...
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