How do I identify Trögerite?

Trögerite can be identified by its hardness of 2 - 3 on the Mohs scale, Lemon-yellow color. Look for these key characteristics when examining specimens.

What color is Trögerite?

Trögerite typically appears in Lemon-yellow, to deep yellow. Color can vary depending on impurities and formation conditions.

How hard is Trögerite?

Trögerite has a hardness of 2 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

Trögerite

A variety of Minerals

What is Trögerite?

Trögerite Market Value Calculator

Estimate the market value of Trögerite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Trögerite Localities Map

See where Trögerite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

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North ZoneCentral RidgeSouth Basin

Quick Facts

Physical Properties

Color: Lemon-yellow, to deep yellow
Hardness (Mohs): 2 - 3
Density: 4.8 g/cm³
Streak: White to pale yellow

Chemical Properties

Chemical Formula: (H3O)(UO2)(AsO4) · 3H2O There is a considerable confusion in the literature in distinguishing amongst two independent species, (meta)hydroniumuranospinite (structure based upon autunite topology), and trögerite (structure based upon different topology, as indicated by U:As ratio equal 3:2, c.f. original description by Weissbach 1873). Locock et al. (2004) introduced a misleading assignment of trögerite to the autunite group, with the composition (H3O)2(UO2)2(AsO4)26. Chernorukov et al. (2011) synthesized compound of the composition (UO2)3(AsO4)2(H2O)12, which they equalized with trögerite. Structural investigations of Locock and Burns (2002) on synthetic (UO2)3(PO4)2(H2O)4, which is based on uranophane topology, suggests, that trögerite may be based on similar topology, having a framework structure with uranium located both on sheets as well as in interlayer, similarly as e.g. phosphuranylite (Demartin et al. 1991). The chemical composition of trögerite given in original description by Weissbach (1873) suggests that these two substances are not same mineral. Recently electron microanalysis of the type material of trögerite documented neither presence of trögerite on it nor the presence of (H3O)2(UO2)2(AsO4)26. All analyzed crystals belong to nováčekite (Plášil et al. in prep.)
Elements: As, H, O, U

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