Wangpuite

Chemical formula: K<sub>3</sub>(PO<sub>4</sub>)(Mo<sup>6+</sup><sub>12</sub>O<sub>36</sub>)

Wangpuite is an extremely rare potassium molybdate, forming microscopic, hexagonal, yellow crystals.

## Characteristics Wangpuite is a mineral from the molybdate group, chemically defined as a potassium phosphate-molybdate. It occurs as extremely small, hexagonal, tabular crystals, rarely exceeding 20 micrometers in diameter and 5 micrometers in thickness. These crystals form rosette aggregates or appear as single flakes. Due to their microscopic size, visual features are only discernible under high magnification. ## Physical Properties Due to the microscopic size of the crystals, most physical properties, such as hardness, density, fracture, or cleavage, have not been determined. The luster is described as vitreous. The mineral is transparent. ## Colors and Varieties Wangpuite is characterized by a pale yellow color. No varieties have been reported. ## History and Name The mineral's name honors Professor Wang Pu (王璞, 1917-1995), a distinguished Chinese geologist and mineralogist, for his contributions to the study of mineral deposits in China. The mineral was approved by the International Mineralogical Association (IMA) in 2022 (IMA2022-093). It was discovered in the Lianshanguan uranium mine in Liaoning Province, China. ## Uses Wangpuite has no industrial application and is of interest only for scientific study and for specialized micromineral collectors.

Properties

Luster
Vitreous
Streak
Light yellow
Transparency
Transparent
Crystal system
Hexagonal

Diagnostic features

## Identification Identification of wangpuite is impossible without advanced analytical techniques. Preliminary identification under a microscope relies on observing characteristic, pale yellow, hexagonal crystals forming rosette aggregates on the rock matrix. Final confirmation requires chemical analysis (EDS) and structural analysis (X-ray diffraction). ## Differentiation from Similar Minerals In its occurrence environment, it may be confused with other secondary yellow uranium and molybdenum minerals, such as iriginite or kalcurmolite. Differentiation is based on crystal shape analysis (hexagonal flakes in the case of wangpuite) and precise laboratory tests that will show the presence of potassium and phosphorus in its composition. ## Crystal Forms The mineral forms very small, six-sided (hexagonal) crystals with a tabular habit. These crystals often combine into small, rosette aggregates.

Geological environment

## Genesis Wangpuite is a secondary mineral that forms in the oxidation zone of hydrothermal uranium-molybdenum deposits. It crystallizes from solutions rich in molybdenum, potassium, and phosphorus under low temperature and pressure conditions. Its formation is associated with the weathering of primary molybdenum and uranium ores. ## Mineral Associations At the type locality (Lianshanguan), wangpuite co-occurs with quartz, fluorite, calcite, pyrite, galena, uraninite, as well as secondary minerals such as iriginite and kalcurmolite. ## Localities The only confirmed locality of wangpuite in the world is the Lianshanguan uranium mine, located in Lianshanguan County, Anshan Prefecture, Liaoning Province in northeastern China.

Rarity

Extremely rare

For collectors

## Quality Criteria The quality of a wangpuite specimen is assessed solely based on microscopic observation. The most desirable specimens are those with clearly formed, sharp crystals creating aesthetic, rosette aggregates. Contrast with the rock matrix and the absence of damage to the delicate crystals are also important. Due to its extreme rarity, any specimen with confirmed presence of this mineral is scientifically valuable. ## Popular Localities The only source of specimens is the type locality – the Lianshanguan mine in China. Material from this location is extremely difficult to acquire.

Care and storage

## Cleaning Specimens of wangpuite, due to their extreme delicacy and microscopic size, should not be cleaned by any mechanical or chemical means. Any attempts at cleaning will almost certainly lead to the destruction of the fragile crystals. They should be treated solely as objects for microscopic observation. ## What to Avoid Avoid any physical contact, including touching, ultrasonic cleaning, as well as exposure to chemicals, temperature changes, and humidity. Even a strong blast of air can damage the delicate aggregates. ## Storage Specimens should be stored exclusively in specialized micromount boxes, protected from shocks, dust, and vibrations. Display is only possible in the form of microscopic photographs.

Sources

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