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revise pigment metadata #2

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8f78b74
revise pigment metadata
archaeothommy May 4, 2026
0a645ba
Update metadata_pigment.md
archaeothommy May 4, 2026
49df22f
Update metadata_pigment.md
archaeothommy May 4, 2026
fbce83f
move metadatum Chromophore to pigment type
archaeothommy May 6, 2026
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6 changes: 6 additions & 0 deletions docs/changelog.md
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Original file line number Diff line number Diff line change
@@ -1,3 +1,9 @@
## Version 0.3.1

* Addition of new `OP3.3 material_pigment_composition_chromophore`
* Change field type of `AS 3.1 assemblage_investigation_unit_type` to free text
* Change scope of `OP4.2 material_pigment_composition_compound` to all chemical formulas (or names) and its field type to free text

## Version 0.3

* Addition of `OP5.3 material_pigment_production_details`
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21 changes: 15 additions & 6 deletions docs/metadata_pigment.md
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Expand Up @@ -24,7 +24,7 @@
**Occurrences:** 1–n
**Definition:** Information about the pigment type.

*with the two subproperties:*
*with the three subproperties:*

### Type
**ID and name:** OP3.1 material_pigment_type_chemistry
Expand All @@ -42,6 +42,15 @@
**Definition:** Is it a natural or synthetic pigment?
**Allowed values and other constraints:** controlled vocabulary

### Chromophore
**ID and name:** OP3.3 material_pigment_composition_chromophore
**Provided by:** data provider
**Obligation:** recommended
**Occurrences:** 0–n
**Definition:** The part of the pigment's compound creating its colour.
**Allowed values and other constraints:** free text
**Example:** Organic-based, Co-based

## Pigment composition
**ID and name:** OP4 material_pigment_composition
**Provided by:** data provider
Expand All @@ -64,21 +73,21 @@
end="<!--chemistry-end-->"
%}

### Organic compounds
### Chemical compound
**ID and name:** OP4.2 material_pigment_composition_compound
**Provided by:** data provider
**Obligation:** recommended
**Occurrences:** 0–n
**Definition:** The (main) organic compounds in the pigment.
**Allowed values and other constraints:** free text
**Example:** Lycopene
**Definition:** The (chemical) formula or name of the main compounds in the pigment. If it is a mineral pigment, record the name in [`OP4.4.1 Mineral name`](metadata_pigment.md#441-mineral-name).
**Allowed values and other constraints:** free text
**Example:** Dracorubin, Mg2Co(AsO4)2

### Mineralogical composition
**ID and name:** OP4.3 material_pigment_composition_mineral
**Provided by:** data provider
**Obligation:** recommended
**Occurrences:** 0–n
**Definition:** If it is mineral pigment, which minerals are present?
**Definition:** If it is a mineral pigment, which minerals are present?

*with the two subproperties:*

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