Grade specification sheet
GL-CAL Glass Batch Feed
Fine, practically dust-free oolitic aragonite as the calcium carbonate source in soda-lime, container, flat and specialty glass batches.
- < 0.01% silica, SiO2
- 0.01% iron oxide, Fe2O3
- 825°C decomposition
- > 1.7m2/g surface area
1Intended applications
- Soda-lime container glass
- Flat glass
- Fibreglass and mineral wool
- Specialty, optical, laboratory and pharmaceutical glassware
- Partial or full limestone replacement in existing batches
Suitability for any particular process must be confirmed on a representative sample. Application rates and process performance are not specified by AragoCor.
2Particle size specification
| Grade | Sizing | Status | Classification range |
|---|---|---|---|
| GL-CAL | < 0.1 mm | Published range | Screened from the natural commercial gradation |
| Custom | 20–325 mesh | Customer specification required | Application-specific classification |
The full screen size specification for the natural commercial grade is given in TDS-OA-001, section 5.
3Relevant chemistry
| Component | Value | Unit | Method | Status |
|---|---|---|---|---|
| Calcium carbonate, CaCO3 | 96.17 | % by wt | ASTM C 25 | Representative analysis |
| Magnesium carbonate, MgCO3 | 0.24 | % by wt | ASTM C 25 | Representative analysis |
| Silica, SiO2 | < 0.01 | % by wt | ASTM C 25 | Representative analysis |
| Iron oxide, Fe2O3 | 0.01 | % by wt | ASTM C 25 | Representative analysis |
| Aluminium oxide, Al2O3 | 0.10 | % by wt | ASTM C 25 | Representative analysis |
| Strontium carbonate, SrCO3 | 1.43 | % by wt | ASTM C 25 | Representative analysis |
Analysis by Bowser-Morner, Inc. (AASHTO/ISO 17025), report 124914A. Full composition, including published deposit ranges, is given in TDS-OA-001.
4Physical characteristics
| Property | Value | Unit | Method | Status |
|---|---|---|---|---|
| Specific gravity | 2.93 | — | — | Representative analysis |
| Mohs hardness | 3.5–4 | Mohs | — | Published range |
| Surface area | > 1.7 | m2/g | Keck Lab | Representative analysis |
| Crystal system | Orthorhombic | — | XRD | Representative analysis |
| Zeta potential | −6.65 to −33.85 | mV | — | Published range |
| Moisture, as received | 5–10 | % | — | Published range |
5Why this grade
| Consideration | Basis |
|---|---|
| Decomposition temperature | Aragonite decomposes at 825 °C against 1,339 °C for calcite, reducing the energy required to release calcium into the melt. |
| Calcination rate | Uniform spherical ooids with high micro-porosity and surface area accelerate calcination. Relative reactivity has been reported at up to 1.5 times that of limestone. |
| Batch consistency | Low decrepitation owing to the microcrystalline structure; the material flows and meters predictably. |
| Low colourants | Silica below 0.01% and iron oxide at 0.01% as measured. Iron and sulfur limits for colourless or optical batches should be confirmed against the lot certificate. |
Process-specific batch sizing is available across the 100–325 mesh range (150–45 µm). Sizing outside the published GL-CAL band is supplied to customer specification.
6Packaging options
| Format | Detail |
|---|---|
| Dry bulk | Vessel or bulk trailer |
| Super sack | Up to 3,000 lb |
| Bagged | From 1 lb |
| Distribution | Stockton, California |
7Information required for quotation
- Required particle sizing or target specification
- Estimated annual volume
- Delivery destination — city, ZIP or port
- Intended process or application
- Packaging format
- Any standard or specification to be met
8Quality documentation available
| Document | Content |
|---|---|
| Lot COA | Certificate of analysis issued for each dispatched lot |
| TDS-OA-001 | Master technical data sheet — full composition, properties and sizing |
| CERT-OA-001 | OMRI Listed® summary, product code avw-23214 |
| PDS-OA-001 | Manufacturing process — mechanical processing, no additives |
| SHS-OA-001 | Occupational safety summary |
| SDS | 16-section GHS Safety Data Sheet — consult before handling |
Send the grade, sizing, annual volume and destination and a sales engineer will respond with pricing and a freight estimate.
Values marked Representative analysis are measurements from an identified sample and describe material as tested. Values marked Published range are historical deposit ranges for dried, unwashed material. Neither constitutes a guaranteed minimum or maximum; a guaranteed specification is agreed in writing per contract and confirmed per lot by certificate of analysis. This information is offered for consideration, investigation and verification. It is not a warranty or representation of suitability for any particular application, nor permission to practise any patented invention.
Revision history
| Rev | Date | Change |
|---|---|---|
| A | Sep 2026 | First issue on approved values. |
AragoCor Minerals LLC · 2453 Grand Canal Blvd, Suite 200, Stockton, CA 95207