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bultfonteinite

nesosilicate mineral
Class type of: spurrite-afwillite mineral group Q13114

Facts

16 properties
Instance of
mineral species
Subclass of
spurrite-afwillite mineral group[4]
Chemical formula
Ca₂[SiO₃(OH)]F·H₂O[3]
Crystal system
triclinic crystal system[6]
Described by source
On bultfonteinite, a new fluorine-bearing hydrous calcium silicate from South Africa[14]
IMA Mineral Symbol
Bul[16]
IMA status and/or rank
grandfathered mineral (G)[7]
Mohs' hardness
+4.5[13]
Named after
Bultfontein[2]
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
9.AG.80[12]
Nickel-Strunz 9th edition (updated 2009)
9.AG.80[11]
Point group
triclinic-pedial[8]
Space group
triclinic-pedial[9]
Streak color
white[5]
Strunz 8th edition (series ID, updated)
VIII/A’.06b[10]
Type locality (geology)
Bultfontein mine[15]
🏷️ Also known as
en bultfonteinite en Dutoitspanite de Bultfonteinit fr bultfonteinite fr bultfontéinite uk Бултфонтейніт
🔖 Identifiers · 6
Image (Wikimedia Commons)
Bultfonteinite - Linxi, Chifeng City, Inner Mongolia, China.jpg ↗
Dana 8th edition
52.4.7.2
Freebase ID
/m/0jwvphb
Kivid.info ID
1581
Mindat mineral ID
13k (800–13k, n=3)
Wolfram Language entity code
Entity["Mineral", "Bultfonteinite"]

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🔗 Connections
Crystal system 1
triclinic crystal system
Named after 1
Bultfontein
Streak color 1
white
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Summary

bultfonteinite is a mineral species[1].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). bultfonteinite. Retrieved November 6, 2026, from https://4ort.xyz/entity/bultfonteinite
MLA “bultfonteinite.” 4ort.xyz Knowledge Graph, 4ort.xyz, 6 Nov. 2026, https://4ort.xyz/entity/bultfonteinite.
BibTeX @misc{4ortxyz_bultfonteinite_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{bultfonteinite}}, year = {2026}, url = {https://4ort.xyz/entity/bultfonteinite}, note = {Accessed: 2026-11-06}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): bultfonteinite — https://4ort.xyz/entity/bultfonteinite (retrieved 2026-11-06)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 9w ago · Baum64 · 2026-09-02 view diff on Wikidata ↗
    Mohs' hardness → 4.5
    "Created claim: Mohs' hardness: 4.5, batch #270249"
  2. 11w ago · Baum64 · 2026-08-23 view diff on Wikidata ↗
    Streak color → white
    Instance of → mineral species
    Point group → triclinic-pedial
    Type locality (geology) → Bultfontein mine
    + 6 other properties edited (see Wikidata diff for full list)
    "Created claim: Point group: triclinic-pedial, batch #269342"
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