# Spruce soundboards show unnatural elemental compositions and oxidation patterns.

> Spruce soundboards show unnatural elemental compositions and oxidation patterns.

Source: https://mysteriesdept.com/mysteries/stradivari-secret/evidence/EVD0CQAGS8P0FF0/spruce-soundboards-show-unnatural-elemental-compositions-and  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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Evidence · Stradivari "secret"

# Spruce soundboards show unnatural elemental compositions and oxidation patterns.

Spruce soundboards show unnatural elemental compositions and oxidation patterns.

Supported0

## What it bears on 1 answer

[Stradivari and Guarneri treated their wood with mineral solutions (borax, sulphates, salt, alum, alkali),…](https://mysteriesdept.com/mysteries/stradivari-secret/answers/ANS0CQAGS0W59AR/stradivari-and-guarneri-treated-their-wood-with-mineral)

Most likely

FOR

## Cite it

```
Mysteries Department. (2026). Spruce soundboards show unnatural elemental compositions and oxidation patterns. [Evidence EVD0CQAGS8P0FF0]. https://mysteriesdept.com/r/EVD0CQAGS8P0FF0
```

Key

**EVD** 0CQAGS8P0FF0

Kind

Evidence

Tier

Supported

Version

1

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