Mineral Checklist

Generate a collector's checklist of minerals organized by Strunz mineral class. Track your collection, set goals, and discover new minerals to add to your cabinet.

Collection
Collection Progress

How to Use

  1. 1
    Choose a Strunz mineral class or subclass

    Select from the ten primary Strunz classes—native elements, sulfides, halides, oxides, carbonates, nitrates, borates, sulfates, phosphates, or silicates—or drill into subclasses to focus your checklist on a specific chemical group such as chain silicates or carbonate nitrates.

  2. 2
    Mark minerals you have collected

    Check off each species you own, specifying whether your specimen is a massive, crystallized, or twinned example. The checklist tracks completion percentage by class and subclass, highlighting groups where your collection is strong and gaps where notable species are missing.

  3. 3
    Set collection goals and explore discovery suggestions

    Review the suggested acquisition targets based on your current gaps. The tool prioritizes species by collector interest, display quality, and acquisition difficulty, flagging whether each target species is commercially available, rare, or locality-specific so you can plan future collecting trips or purchases.

About

Systematic mineral collecting—the pursuit of representative specimens from every mineral class, subclass, or family—has driven mineralogical discovery since the 18th century. James Dwight Dana’s “System of Mineralogy,” first published in 1837 and revised through the 8th edition by Charles Palache, Harry Berman, and Clifford Frondel between 1944 and 1962, formalized the chemical-structural taxonomy that modern collectors and scientists use to organize collections.

The International Mineralogical Association’s Commission on New Minerals, Nomenclature and Classification serves as the global authority for species approval, evaluating proposals based on X-ray diffraction data, electron microprobe compositional analysis, and structural determination. The commission approves roughly 80–100 new species annually, drawn largely from advanced analytical studies of locality specimens and from extreme-environment samples such as fumarolic deposits and impact melt rocks. The current species count of approximately 5,900 represents a small fraction of theoretically possible mineral compositions, reflecting the thermodynamic constraints of natural mineral formation.

For collectors, a structured checklist tied to a classification system transforms accumulation into systematic documentation. Tracking collection completeness by Strunz class reveals collecting patterns and highlights chemical groups that are underrepresented. Many collectors pursue representation from all 10 classes, then refine goals to include all subclasses, regional mineralogy from specific geological provinces, or thematic groups such as fluorescent minerals, pseudomorphs, or minerals named after notable mineralogists. Organized collection documentation, cross-referenced against locality, acquisition source, and analytical verification, transforms a personal collection into a scientific resource.

FAQ

What is the Strunz classification system for minerals?
The Strunz system, created by German mineralogist Karl Hugo Strunz and first published in 1941 with subsequent editions through the 9th edition in 2001 (co-authored with Ernest Nickel), organizes minerals hierarchically by chemical composition and crystal structure. The system divides all minerals into 10 classes, then into subclasses, families, and ultimately individual species. Class 1 covers native elements; Class 9 covers silicates, which are further divided into nesosilicates, sorosilicates, cyclosilicates, inosilicates, phyllosilicates, and tectosilicates based on silicate anion polymerization. The system is widely used in European mineralogy literature and by the Mineralogical Society of America.
How many valid mineral species exist currently?
As of the most recent tallies, the International Mineralogical Association’s Commission on New Minerals, Nomenclature and Classification (CNMNC) has approved approximately 5,900 valid mineral species. New species are approved at a rate of roughly 80–100 per year as analytical techniques improve and previously overlooked locality specimens are characterized. Discredited minerals—species found to be synonyms of previously named minerals or based on misidentified specimens—are also regularly removed from the approved list. Collectors typically focus on the 500–1,000 most accessible species; systematic collectors pursuing comprehensive representation of all Strunz classes must source rare secondary and alteration minerals from specific localities worldwide.
What distinguishes a mineral species from a mineral variety?
A mineral species is defined by a unique chemical formula and crystal structure, approved by the IMA-CNMNC after submission of X-ray diffraction data and compositional analysis. A mineral variety shares the species’ fundamental chemical formula and structure but has a distinctive appearance—often color—caused by trace impurities or structural defects. Amethyst, citrine, smoky quartz, and rose quartz are all varieties of the species quartz (SiO₂). Sapphire and ruby are color varieties of corundum (Al₂O₃). Collectors may pursue variety completeness within a species, but taxonomically, varieties are not counted separately in species checklists. Some historical variety names (emerald for green beryl, heliodor for yellow beryl) remain in commercial and collector use despite having no taxonomic standing.
Which Strunz classes are most accessible to beginning collectors?
Class 9 silicates and Class 5 carbonates offer the widest range of affordable, well-crystallized, visually striking specimens suitable for beginning collectors. Silicates include tourmaline, garnet, topaz, beryl, and quartz varieties—all widely available from mineral dealers and gem and mineral shows globally. Carbonates include calcite (with hundreds of crystal habits), malachite, rhodochrosite, and smithsonite, all of which form attractive display specimens. Class 2 sulfides such as pyrite, galena, sphalerite, and chalcopyrite are widely collected for their metallic luster and cubic crystal forms. Class 4 oxides include magnetite, hematite, and cassiterite. Completing even a basic representation of all ten classes requires sourcing native elements (gold, silver, copper) and phosphates (apatite, turquoise), which are more locality-specific but widely represented in the commercial mineral market.
What is a type locality and why is it significant to collectors?
A type locality is the specific geographic site where a mineral species was first described and from which the holotype specimen defining that species was collected. Type locality specimens carry scientific and historical significance because they represent the standard against which all other occurrences of that species are compared. Collectors prize type locality specimens for their provenance: Proustite from the Dolores mine in Chilehas different collector value than specimens from other localities. Some species are known from only a single locality (so-called mono-locality minerals), making type locality specimens extraordinarily rare and valuable. Locality provenance documentation, including mine name, district, country, and collection history, is increasingly important in both scientific and collector communities as the authenticity of rare species specimens is scrutinized more carefully.
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