Axinite is a visually striking and scientifically intriguing group of minerals that attracts geologists, gem cutters, and mineral collectors alike. Its characteristic wedge-shaped crystals and a palette of warm to cool colors make it immediately recognizable, while its chemistry and physical properties reveal stories about the fluids and conditions that formed it. This article explores […]
Augelite is an intriguing and understated member of the phosphate mineral group, prized by mineralogists and collectors for its delicate crystal forms and informative geological associations. Although it rarely features in commercial applications, the study of augelite provides valuable insight into the behaviour of aluminum and phosphate during weathering, metamorphism and low-temperature hydrothermal processes. This
Atacamite is a striking green mineral that captures the attention of geologists, mineral collectors and conservators alike. Beyond its vivid color, this mineral records environmental histories, signals the presence of chloride-rich fluids, and complicates the preservation of archaeological metalwork. In the following sections I will describe what atacamite is, how and where it forms, its
Astrophyllite is a striking and enigmatic mineral that captures attention with its metallic sheen and fanlike, often star-shaped crystal aggregates. Found in unusual, silica-poor igneous environments, it is prized by mineral collectors and admired by lapidaries despite its relative softness and fragility. In this article we explore its origin, properties, global occurrences, applications, and the
Arfvedsonite is a striking and scientifically valuable dark amphibole that attracts the attention of mineral collectors, petrologists, and lapidaries alike. Its combination of deep color, complex chemistry and occurrence in unusual alkaline rocks makes it both an attractive specimen and an informative probe into magmatic processes. This article explores the nature of arfvedsonite, where it
Aragonite is a fascinating and widely distributed form of calcium carbonate that plays crucial roles in geology, biology and industry. This article explores its nature, where it forms, how it is used, and several intriguing aspects that link mineralogy to environmental science and human activity. Below you will find detailed information divided into clear sections
Antigorite is a member of the serpentine mineral group that attracts attention because of its geological importance, influence on earthquake mechanics, and environmental implications. This mineral commonly forms in hydrated ultramafic rocks and produces characteristic textures and physical behaviors in crustal and mantle settings. In the paragraphs that follow I will describe what antigorite is,
Anthophyllite is a relatively uncommon member of the amphibole group of minerals that has attracted attention for both its geological significance and its controversial role as one of the naturally occurring forms of asbestos. In this article you will find an overview of what anthophyllite is, how and where it forms, the ways humans have
Annabergite occupies a small but fascinating corner of mineralogy: a striking, often vivid green secondary arsenate that serves both as a visual emblem of weathered nickel deposits and as a reminder of the complex interplay between geology, chemistry and human industry. This article explores where annabergite is found, how it forms, what uses and implications
Ankerite is a fascinating member of the carbonate mineral family whose chemical variability and textural diversity make it important both as a recorder of past geological processes and as an indicator mineral in many ore-forming environments. This article explores where ankerite occurs, how it forms, its physical and chemical characteristics, and the practical and scientific
