Plan Storage Zones by Size and Fragility
2 hoursAssign drawers for micromounts, shoebox trays for thumbnails, and padded shelves for fist-sized specimens.
Beginner1 week
Specimen Storage Setup
Complete guide for specimen storage setup — step-by-step workflow, tools, checklist, and expert tips to get started.
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Workflow
Build Padded Trays and Cell Dividers
1 weekendLine drawers with ethafoam; build cardboard cell dividers for thumbnail specimens; use egg cartons for temporary field storage.
Install Hygrometer and Silica Gel
2 hoursTarget 40–50% RH and stable 65–70°F; recharge silica gel canisters monthly in oven at 250°F for 2 hours.
Sync Physical Location with Catalog
3 hoursLabel every drawer and cell with location code matching catalog; audit physical vs catalog inventory quarterly.
Tools Used
- NotepadPrimary
Map storage location codes to catalog entries and track quarterly inventory audit results.
- Percentage CalculatorPrimary
Monitor storage relative humidity targets and calculate silica gel recharge schedule.
- Rock Density CalculatorSupporting
Estimate specimen weight for shelf load planning and heavy specimen lower-shelf placement.
- Date Difference CalculatorReference
Schedule quarterly inventory audits and silica gel recharge dates from last maintenance.
Checklist
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Planning
Equipment
Climate
Preservation
Organization
Maintenance
Reference Materials
Storage Environment TargetsTable
Recommended conditions for mineral specimen preservation.
| Parameter | Target | Risk |
|---|---|---|
| Temperature | 65–70°F | Thermal cycling cracks crystals |
| Relative humidity | 40–50% RH | Pyrite disease above 60% |
| Light | Dark storage | Amethyst fades in weeks |
| Pyrite zone | < 40% RH | Sulfuric acid formation |
Shelf Load LimitFormula
Maximum shelf load = shelf area × safe load rating; heavy specimens (SG > 4) on bottom shelves only.
Pyrite IsolationStandard
Store pyrite and marcasite separately in sealed containers with desiccant — pyrite oxidation spreads acid fumes.
One Per Cell
Contact between specimens causes permanent crystal damage — individual cells always.
Pyrite Time Bomb
Pyrite in humid storage produces sulfuric acid — check sulfides monthly for white powder.
Off Floor
Basement flood destroys decades of collection in minutes — minimum 6 inches off floor.
Safety Notes
- Pyrite disease releases sulfuric acid fumes — inspect sulfide storage with ventilation and gloves.
- Heavy mineral cabinets must be anchored to wall — tipping causes injury and specimen loss.