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ROCK SALT • EVAPORITE MATERIAL

Rock Salt & Pink Salt Context in Pakistan

Commercial rock salt from Pakistan comprises natural crystalline halite extracted from the Salt Range. Requirements should specify chemical purity (NaCl %), moisture, particle gradation, and packaging. Enigma Earth treats rock salt strictly as an industrial and edible food ingredient, rejecting unscientific health, detox or therapeutic claims.

Product Forms
Edible Granules / Chemical Feed / Sawn Tiles
Origin Context
Salt Range Evaporite Province, Punjab
Quality Criteria
NaCl >= 98.0%, Insolubles < 0.20% (Lot Tested)
Regional Context
Punjab Evaporite Formations
Representative rock salt specimen associated with Pakistan Salt Range
Representative evaporite mineral material: Crystalline halite displaying characteristic pinkish iron oxide tint from the Salt Range Formation, Punjab.
Representative material specimen. Occurrence does not constitute available inventory. Consignment verification required.

Mandatory Claim Boundary & Sourcing Notice: This page describes mineral/material evidence and buyer requirements. It does not represent current Enigma Earth inventory. Source, ownership, grade, quantity and availability must be verified for the specific enquiry.

GEOLOGICAL APPRAISAL

Mineralogy & Geological Occurrence

Pakistan contains one of the earth's largest and oldest rock salt provinces, stretching over 300 kilometers across northern Punjab. Known internationally as 'Himalayan Pink Salt', the deposits are massive underground stratabound sequences of high-purity halite (NaCl) interspersed with thin marl and anhydrite seams.

Geological Setting & Host Formations

The salt beds belong to the Neoproterozoic to early Cambrian Salt Range Formation, deposited in a restricted marine evaporite basin along the northern margin of the Indian shield. Underground extraction is conducted predominantly via room-and-pillar mining at Khewra, Warcha, and Kalabagh, preserving structural stability and avoiding blasting impurities.

Key Mineralogy & Chemical Formula

The mineral is predominantly halite (NaCl >= 96% - 99%). Natural coloration ranging from crystalline white and delicate peach to deep reddish-pink is caused by sub-microscopic inclusions of iron oxides (hematite, Fe2O3) and polyhalite within the crystalline matrix.

Formula: Halite / Sodium Chloride (NaCl)
PAKISTAN EVIDENCE

Pakistan Evidence & Regional Context

Rock salt is extensively mined under state-owned enterprises (such as Pakistan Mineral Development Corporation / PMDC) and licensed private concessionaires, producing millions of metric tons annually for chemical industries, de-icing, and food consumption.

[P]Official Production Evidence

Salt Range (Khewra, Warcha, Kalabagh, Jhelum, Mianwali)

The epicentre of commercial salt extraction in Pakistan. Khewra is one of the world's oldest operating mines; Warcha produces high-purity white and pale pink industrial/edible salt.

Documented Regional Occurrence
Khyber PakhtunkhwaRegional Context

Kohat Salt Basin (Bahadur Khel, Jatta, Karak)

Thick Tertiary evaporite sequences producing grey and dark crystalline rock salt utilized primarily for regional livestock and industrial applications.

Documented Regional Occurrence
Evidence Boundary: Marketing salt as 'Himalayan Pink Salt' does not automatically certify that material originates from a specific mine or conforms to export food-grade sanitary standards. Official origin tracing and batch testing are required.
PRODUCT ARCHITECTURE

Salt Product Forms & Processing

Commercial requirements must strictly differentiate between raw extraction, sorted grades, and processed products.

01

Edible Gourmet Table & Grinder Salt

Optical sorted, crushed, washed, and dried pink salt granules intended for direct human consumption, spice blending, and consumer refill packaging.

Screened granules: Coarse (2.0 mm - 5.0 mm); Fine table salt (0.2 mm - 0.8 mm)
02

Chlor-Alkali Chemical Grade Salt

High-purity raw or washed halite rock delivered to chlor-alkali chemical plants for electrolytic production of chlorine, caustic soda (sodium hydroxide), and soda ash.

Crushed rock: 10 mm to 50 mm (NaCl >= 98.0%, Low Ca/Mg)
03

Raw Bulk Salt Lumps

Unprocessed mine-run boulders extracted by mechanical undercutting, shipped in bulk for overseas crushing, decorative crafting, or industrial processing.

Large rock lumps: 5 kg to 50 kg per piece
04

Architectural & Specialty Salt Tiles

Precision diamond-sawn rectangular bricks and slabs utilized in architectural installations, decorative wall cladding, dry-aging meat lockers, and wellness spa construction.

Dimensional tiles: 200 mm x 100 mm x 25 mm / 50 mm
TECHNICAL QUALIFICATION

Buyer Specification Requirements

Prospective buyers and project owners should specify the parameters below. Values represent typical industrial targets and do not imply universal Pakistani deposit compliance.

Chemical Composition & Purity

5 Parameters
Sodium Chloride (NaCl)
Edible Grade: >= 98.0% - 99.2%; Industrial: >= 95.0% - 97.0%
Dry basis titration per Codex Alimentarius
Water-Insoluble Matter
Edible: Maximum 0.20% - 0.50%; Industrial: < 1.0%
Insoluble marl/silicate residues
Moisture Content
Oven-dried edible: <= 0.10% - 0.20%; Raw lump: < 1.0%
Loss on drying at 110°C
Sulfate (SO4)
Typically 0.20% - 0.60% as CaSO4 (anhydrite/gypsum)
Natural evaporite constituent
Calcium (Ca) & Magnesium (Mg)
Ca < 0.25%; Mg < 0.10%
Critical for chlor-alkali brine quality

Contaminant & Food-Safety Standards

3 Parameters
Heavy Metals (Codex Compliance)
Lead (Pb) < 1.0 ppm, Arsenic (As) < 0.5 ppm, Cadmium (Cd) < 0.5 ppm, Mercury (Hg) < 0.1 ppm
Lot-certified via ICP-MS
Foreign Matter & Physical Impurities
Zero metallic contamination; non-detectable microplastics
Magnetic separation and optical sorting verified
Food Safety Certification
ISO 22000 / HACCP / Halal / Kosher compliance on request
Processor facility certification

Packaging & Logistics

3 Parameters
Packaging Formats
25 kg / 50 kg food-grade poly-lined bags; 1.0 MT - 1.2 MT big bags; Retail stand-up pouches
Moisture-barrier liners mandatory
Consignment Sizing
Full Container Load (FCL) 25 - 27 MT in 20ft containers; Bulk vessel charter 5,000 - 30,000 MT
Weight limits governed by destination road laws
Geographical Indication (GI)
Compliant with Pakistan Geographical Indication (Registration & Protection) Act
Authentic Salt Range origin verification
VERIFICATION PROTOCOL

Testing & Verification Requirements

Testing and quality verification must be conducted by an appropriate independent laboratory. Commercial transactions require representative sampling, assay, chemical analysis or gemological appraisal, and third-party inspection. Enigma Earth does not maintain a private testing monopoly.

Representative Sampling

Representative sampling of packaged lots or flowing processing lines according to ISO 24333 / Codex Alimentarius CXS 150-1985 guidelines for food-grade salt.

Standard Test Methods
  • Codex Alimentarius Standard for Food Grade Salt (CXS 150-1985)
  • ISO 2481 (Sodium chloride for industrial use — Determination of halogens)
  • ISO 2482 (Determination of calcium and magnesium)
  • ISO 22000:2018 (Food safety management systems)
Laboratory Independence

Edible salt export consignments require certified certificates of analysis from accredited analytical laboratories, confirming heavy metal safety, iodine levels (if iodized), and microbiological cleanliness.

QUALITY CRITERIA

Purity, Contaminants & Quality Factors

Commercial specifications require explicit thresholds for penalty elements, structural soundness, color uniformity, and treatment parameters.

Water-Insoluble Marl & Clay Residue

Quality Parameter

Operational Impact: Creates cloudy dissolution in food applications and leaves undesirable gritty sediment in consumer table salt

Tolerance: Premium edible grades enforce insolubles < 0.20%

Moisture Absorption & Caking

Quality Parameter

Operational Impact: Halite is naturally hygroscopic above 75% relative humidity; excess moisture induces severe bag hardening and caking

Tolerance: Strictly limited to < 0.20% for retail consumer products; anti-caking additives applied only on buyer request

Heavy Metal Exceedances

Quality Parameter

Operational Impact: Violates international food safety directives (EU, US FDA, CODEX); leads to border rejection

Tolerance: Zero tolerance for heavy metals above statutory limits

Visual Color Inconsistency

Quality Parameter

Operational Impact: Natural salt seams vary from light peach to deep ruby; uneven blending causes customer disputes

Tolerance: Requires precise optical sorting into calibrated color bands (Dark Pink, Medium Pink, White)
SUPPLY CHAIN INTEGRITY

Sourcing, Provenance & Preparation Logistics

Due diligence guidelines for legal chain of custody, packaging standards, and maritime export protocols.

Origin Verification & Licensing

Authentic Pakistani rock salt originates exclusively from the Salt Range and Trans-Indus basins. Consignments must be backed by official PMDC or provincial mining dispatch passes and registered trade credentials.

Pakistan has enacted strict Geographical Indication (GI) protections for Himalayan Pink Salt to prevent unauthorized re-labeling and trade diversion. Sourcing conforms to national export regulations.

Provenance Caution: The market label 'Pink Salt' does not verify specific mine origin or food safety. Bulk rock mined for road de-icing or industrial purposes must never be diverted into the food chain without certified hygienic processing.
Packaging & Maritime Transport
  • 25 kg and 50 kg multi-layer food-grade poly-lined polyethylene bags, palletized and shrink-wrapped
  • 1.0 MT heavy-duty woven polypropylene bulk totes with sealed moisture-barrier inner liners
  • Custom consumer packaging (shakers, stand-up zipper pouches, mills) packed in master cartons

Transported by covered trailer from Salt Range processing mills to Karachi Port or Port Qasim for export containerization. 20ft heavy-load containers (payload 26-28 MT) are standard.

Handling Caution: Containers must be equipped with high-capacity desiccant bags to absorb container condensation ('container rain') during equatorial ocean voyages, preventing surface dissolution of salt crystals.
INQUIRY SUBMISSION GUIDE

What to Send: Salt Requirement Checklist

To evaluate feasibility and structure compliant off-take, please include the following technical details in your enquiry.

1Intended product application (Edible table salt vs De-icing vs Chemical chlor-alkali vs Decorative tiles)
2Required grain size distribution (Fine 0.2-0.8 mm vs Medium 1-3 mm vs Coarse 2-5 mm vs Raw lump)
3Color grading preference (Deep pink vs Medium pink vs White halite)
4Chemical purity threshold (Minimum acceptable NaCl % and maximum insolubles %)
5Packaging specifications (25 kg bags vs 1 MT big bags vs Private-label retail packaging)
6Required food safety and origin certifications (HACCP, ISO 22000, GI certificate)
7Delivery terms and destination seaport (FOB Karachi vs CIF destination port)
Incomplete RFQs lacking grade cutoffs or consignment volumes cannot be processed.
Submit a Rock Salt Requirement
FREQUENTLY ASKED QUESTIONS

Frequently Asked Questions: Rock Salt (Himalayan Pink & White Halite)

Key questions regarding Pakistani mineral availability, testing protocols, and trade qualification.

The pink to reddish coloration is natural and caused by minute trace quantities of iron oxide (hematite) and polyhalite minerals structurally integrated within the crystalline halite lattice during ancient marine basin evaporation over 500 million years ago.

Structured Mineral Qualification

Structure a Compliant Rock Salt (Himalayan Pink & White Halite) Requirement

Submit required particle sizing, purity parameters, and consignment tonnages for structured evaluation.