🧂 Celtic Sea Salt (Light Grey) — Complete Element List

Updated: Aug 31, 2025 • Source-based summary

At a glance

Light Grey Celtic® Sea Salt is predominantly chloride and sodium with small but meaningful amounts of magnesium, calcium, and potassium. Many other elements are present at trace or ultra-trace levels (often reported as “<” values near detection limits). Composition varies slightly by batch and method.

Chloride ~54% Sodium ~34% Magnesium ~0.40–0.50% Calcium ~0.14–0.15% Potassium ~0.13–0.14% pH ~8.1

Values shown as ranges reflect multiple lab reports; see sources below.

What’s new vs. a typical “short list”

Beyond the familiar minerals (Na, Cl, Mg, Ca, K, Fe, Zn, I), lab reports also detect halogens and rare earths at ultra‑trace levels. Notable “missing-but-detected” elements include: Bromine, Rubidium, Strontium, Zirconium, Niobium, Ruthenium, Rhodium, Palladium, Silver, Hafnium, Tantalum, and several lanthanides.

Major & trace minerals (percent of original sample)

From third‑party X‑ray emission analysis (full list), complemented by a nutrient panel (partial analysis) of key macro/trace minerals. “<” indicates below the stated threshold.

Element Symbol % by weight Notes
ChlorideCl54.00 – 54.30Dominant anion (two sources)
SodiumNa33.96 – 34.50Dominant cation (two sources)
SulfurS1.17Trace macro
MagnesiumMg0.396 – 0.504Key trace macro
CalciumCa0.141 – 0.151Trace macro
PotassiumK0.129 – 0.144Trace macro
SiliconSi0.27From clay bed contact
IronFe0.0143 – 0.0284Trace
BromineBr0.0403Halogen trace
StrontiumSr0.0050Alkaline-earth trace
PhosphorusP<0.0395Below reporting threshold
AluminumAl<0.0500Trace; clay contribution
TitaniumTi<0.0015Ultra‑trace
VanadiumV<0.0006Ultra‑trace
ChromiumCr<0.0004Ultra‑trace
ManganeseMn<0.0003Ultra‑trace
CobaltCo<0.0002Ultra‑trace
NickelNi<0.0001Ultra‑trace
CopperCu<0.0001Ultra‑trace
ZincZn0.000787 – <0.0001Ultra‑trace (method dependent)
IodineI<0.0002Ultra‑trace
RubidiumRb<0.0007Ultra‑trace
ZirconiumZr<0.0007Ultra‑trace
NiobiumNb<0.0006Ultra‑trace
MolybdenumMo<0.0007Ultra‑trace
PalladiumPd<0.0019Ultra‑trace
SilverAg<0.0025Ultra‑trace
CadmiumCd<0.0035Ultra‑trace
TinSn<0.0059Ultra‑trace
AntimonySb<0.0074Ultra‑trace
TelluriumTe<0.0537Ultra‑trace
CesiumCs<0.0059Ultra‑trace
GalliumGa<0.0001Ultra‑trace
GermaniumGe<0.0001Ultra‑trace
BariumBa<0.0048Ultra‑trace
LanthanumLa<0.0034Ultra‑trace
CeriumCe<0.0023Ultra‑trace
PraseodymiumPr<0.0017Ultra‑trace
NeodymiumNd<0.0014Ultra‑trace
SamariumSm<0.0010Ultra‑trace
EuropiumEu<0.0009Ultra‑trace
GadoliniumGd<0.0007Ultra‑trace
TerbiumTb<0.0013Ultra‑trace
DysprosiumDy<0.0015Ultra‑trace
HolmiumHo<0.0006Ultra‑trace
ErbiumEr<0.0007Ultra‑trace
ThuliumTm<0.0006Ultra‑trace
YtterbiumYb<0.0005Ultra‑trace
LutetiumLu<0.0005Ultra‑trace
YttriumY<0.0004Ultra‑trace
HafniumHf<0.0004Ultra‑trace
TantalumTa<0.0004Ultra‑trace
RheniumRe<0.0004Ultra‑trace
OsmiumOs<0.0004Ultra‑trace
IridiumIr<0.0003Ultra‑trace
RutheniumRu<0.0013Ultra‑trace
RhodiumRh<0.0016Ultra‑trace
PalladiumPd<0.0019Ultra‑trace
PlatinumPt<0.0004Ultra‑trace
GoldAu<0.0004Ultra‑trace
TinSn<0.0059Ultra‑trace
IndiumIn<0.0044Ultra‑trace
CesiumCs<0.0059Ultra‑trace
ThalliumTl<0.0004Ultra‑trace
LeadPb<0.00004Ultra‑trace; see safety note
MercuryHg<0.000001Ultra‑trace (not detected in some tests)
ArsenicAs<0.0001Ultra‑trace (not detected in some tests)
SeleniumSe<0.0002Ultra‑trace
TechnetiumTc<0.0009Instrument‑limit, interpret cautiously
ThoriumTh<0.0007Ultra‑trace
UraniumU<0.00009Ultra‑trace

Nutrient panel (partial analysis) also reports: pH 8.14, and daily-value equivalents for Ca, Mg, Fe, K, Zn based on a 1/4 tsp (1.53 g) sample.

Safety & context

Sources

  1. Full element list (X‑ray emission analysis, 1‑page PDF): healthfree.com/files/Celtic-Sea-Salt-analysis.pdf
  2. Partial analysis + pH and % macros (1‑page PDF): CloudFront (Selina Naturally)
  3. Lead micrograms per 1/4 tsp comparison (2024 statement): Selina Naturally statement (PDF)

If you need this as JSON/CSV for a product info sheet, let me know and I’ll export it.