Bodieite

Chemical formula: Bi<sup>3+</sup><sub>2</sub>(Te<sup>4+</sup>O<sub>3</sub>)<sub>2</sub>(S<sup>6+</sup>O<sub>4</sub>)

Bodieite is an extremely rare bismuth tellurite-sulfate, forming tiny, tabular crystals of an intense yellow color.

## Characteristics Bodieite is a mineral from the tellurite-sulfate group, characterized by the presence of bismuth, tellurium, and sulfur in its structure. It occurs as very small, tabular or bladed crystals, which rarely exceed 0.2 mm in length. It typically forms small aggregates or rosette-like clusters. Its most characteristic visual feature is its intense, canary-yellow color. ## Physical Properties Bodieite crystals exhibit a vitreous luster. Due to the extremely small size of the crystals, many physical properties, such as hardness or density, have not been precisely measured and are only calculated or estimated values. The mineral is translucent. ## Colors and Varieties This mineral is monochromatic and occurs exclusively in shades of intense, canary yellow. No varieties have been distinguished. ## History and Name Bodieite was first described in 2013 by a team of mineralogists comprising: A. C. Roberts, R. A. Gault, M. A. Cooper, F. C. Hawthorne, A. J. Criddle, J. A. R. Stirling, and B. G. W. Muggridge. The mineral's name comes from the historic Bodie mining district in California (USA), where its type locality, the Bodie mine, is located. ## Uses Bodieite has no industrial significance. Its only importance is scientific and collectible, as an extremely rare and unique representative of tellurium minerals.

Properties

Mohs hardness
2-3
Luster
Vitreous
Streak
Yellow
Density
6.39
Cleavage
Perfect on {0001}
Fracture
Brittle
Transparency
Translucent
Crystal system
Trigonal

Diagnostic features

## Identification Identifying bodieite in field conditions or in an amateur collection is practically impossible without specialized equipment. Key features include its canary-yellow color, occurrence as small, tabular crystals, and association with other rare tellurium minerals. Definitive identification requires advanced analytical methods, such as Raman spectroscopy or X-ray diffraction (XRD). ## Distinguishing from Similar Minerals Bodieite can be confused with other secondary, yellow tellurium minerals, such as emmonsite or mackayite. Differentiation is based on chemical composition and crystal structure analysis. Characteristic of bodieite is the presence of both the tellurite (TeO₃) and sulfate (SO₄) groups. ## Crystal Forms Bodieite crystallizes as very small, thin, tabular crystals with a hexagonal outline. These crystals often form rosette-like or radial aggregates.

Geological environment

## Genesis Bodieite is a secondary mineral, formed in the oxidation (weathering) zones of ore deposits rich in tellurium and bismuth. It forms as a result of the reaction of surface waters with primary tellurium and sulfide minerals under conditions of low temperature and pressure. ## Mineral Associations At its type locality (Bodie mine), bodieite is associated with other rare tellurium minerals, such as emmonsite, mackayite, leisingite, as well as quartz, barite, and gypsum. ## Localities The only confirmed and described occurrence of bodieite in the world is its type locality: the Bodie mine (Standard Mine) in the Bodie district, Mono County, California, USA.

Rarity

Extremely rare

For collectors

## Quality Criteria The quality of a bodieite specimen is determined by the richness and visibility of the crystals on the rock matrix. The most desirable specimens are those with clearly formed, rosette-like aggregates of intense yellow crystals, contrasting with the matrix. Due to the microscopic size of the crystals, their photogenicity and observability under magnification are crucial. ## Popular Localities The only source of bodieite specimens is its type locality in California, USA. All specimens available on the collector's market originate from this single location.

Care and storage

## Cleaning Due to the extreme rarity, small size, and delicacy of the crystals, mechanical cleaning is not recommended. If necessary, compressed air (from a safe distance) can be used to remove loose dust particles. Contact with water and chemicals should be avoided. ## What to Avoid Absolutely avoid contact with water, acids, detergents, and other chemical agents. The crystals are very small and fragile, so they should be protected from shocks, impacts, and abrasion. The specimen should not be exposed to ultrasound. ## Storage Bodieite specimens should be stored exclusively in specialized, sealed "micromount" boxes that protect them from dust, mechanical damage, and humidity changes. Avoid exposure to direct sunlight and store in stable temperature conditions.

Sources

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