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Pietersite: Mineral information, data and localities.
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Pietersite

A variety of Quartz
This page kindly sponsored by Elizabeth R. Apgar Triano
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About PietersiteHide

Formula:
SiO2
Chalcedony with embedded fibers of amphibole minerals with varying degrees of alteration. Blue-gray, brown and yellow colors. The fibers cause a chatoyancy similar to that seen in tiger's eye, but tiger's eye is not made of chalcedony, it is macrocrystalline quartz.




Unique IdentifiersHide

Mindat ID:
27262 (as Pietersite)
3337 (as Quartz)
Long-form identifier:
mindat:1:1:27262:1 (as Pietersite)
mindat:1:1:3337:0 (as Quartz)

Chemistry of PietersiteHide

Mindat Formula:
SiO2
Element Weights:
Element% weight
O53.257 %
Si46.744 %

Calculated from ideal end-member formula.

Synonyms of PietersiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Pietersite associated with Riebeckite◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
1 photo of Pietersite associated with QuartzSiO2

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for PietersiteHide

References for PietersiteHide

Localities for PietersiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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Mines & Prospects
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Physical Geography
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Geological Features
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Administrative Divisions
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Settlements
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Protected Areas
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Meteorites
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Erratics
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Extraterrestrial (e.g. on Moon)
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Artifical Features
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PaleoBioDB localities
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Museum
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The small symbol inside an icon describes the class of locality listed. This can be combined with the three base icon colours (red, green, white) in any combiation.

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Red icons have coordinates entered into the system directly.
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Green icons have coordinates estimated by the system and may also display a blue margin of error circle around them.
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White icons are shown in certain pages to distinguish the locality in question from nearby localities.
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When multiple icons are close together they may be clustered into a group represented by a green circle, click to reveal the contents.
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"); L.easyButton('🛈',function(btn,map) { $("#map_legend").width( $("#map").width()-10); $("#map_legend").height( $("#map").height()-10); $("#map_legend").show() }).addTo(l_mcd[mapid].map); $("#map_legend").hide().on("click",function(e) { e.stopPropagation(); $(this).hide();}); // THIS NEITHER } } function l_j(mapid,lat,long,csys) { l_setcoordsystem(mapid,csys); l_mcd[mapid].map.flyTo([lat,long]); } mapid = 1; macroslayer=null; tempmarker=null; l_mcd[mapid]=[]; l_olayer[mapid]=[]; // l_mcd[mapid].streetview=true; l_mcd[mapid].map_types=true; l_mcd[mapid].div = "map"; l_mcd[mapid].markers= []; l_mcd[mapid].circ = 0; l_mcd[mapid].pts = []; l_mcd[mapid].map = null; l_mcd[mapid].coordsystem=-1; l_mcd[mapid].layerctrl=null; l_mcd[mapid].scalectrl=null; l_mcd[mapid].mon_nw_lat=''; l_mcd[mapid].mon_nw_long=''; l_mcd[mapid].mon_se_lat=''; l_mcd[mapid].mon_se_long=''; l_mcd[mapid].mon_z=''; l_mcd[mapid].slidey=null; l_mcd[mapid].max_zoom = 18; l_mcd[mapid].click_zoom=12; l_mcd[mapid].markercluster = null; l_mcd[mapid].bounds = null; l_mcd[mapid].centerLat=0; l_mcd[mapid].centerLong=0; l_mcd[mapid].initzoom=6; l_mcd[mapid].crs=L.CRS.EPGS3857; // l_mcd[mapid].approxborder=null ; l_mcd[mapid].pts = [ [-19.987422780876,16.471933659428,0,69683,"Hopewell Farm 240, Outjo, Kunene Region, Namibia",0,"","1","253"]]; $(function() { var mapid=1; var i; var tfeat; l_mcd[mapid].markercluster = L.markerClusterGroup({ chunkedLoading: true, maxClusterRadius: 40 }); l_mcd[mapid].featuregroup = L.featureGroup(); l_mcd[mapid].geojsonfeatures = L.featureGroup(); init_pins(); /* add help layer */ l_setcoordsystem(mapid,0); l_mcd[mapid].map.mapid=mapid; l_mcd[mapid].map.on('click',function(e) { var thismap = e.target; var lat = e.latlng['lat']; var lng = e.latlng['lng']; if(macroslayer && thismap.hasLayer(macroslayer)) { var url = 'https://macrostrat.org/api/v2/mobile/map_query_v2?lng=' + lng + '&lat=' + lat + '&z=' + thismap._zoom; $.get(url,function(data) { var out="Macrostrat geological map data"; if(data.success) { var from; var to; var ref; out+="
"; if(data.success.data.mapData[0].name) out += ""; if(data.success.data.mapData[0].lith) out += ""; if(from = data.success.data.mapData[0].b_int) { out+=""; } if(ref = data.success.data.mapData[0].ref) { out += ""; } out+="
Name:" + data.success.data.mapData[0].name + "
Lithology:" + data.success.data.mapData[0].lith+"
Age:"+ from.int_name; if(to = data.success.data.mapData[0].t_int) { if(from.int_name!=to.int_name) out+=" to " + to.int_name; } out+=" ("+from.b_age+" - "; if(to) { out+= to.t_age; } else out+=from.t_age; out+=" Ma)
Reference:"; if(ref.url) out+=""; out+=ref.name; if(ref.ref_year) out+=" ("+ref.ref_year+") "; if(ref.ref_source) out+=", "+ref.ref_source; out+="
"; } L.popup() .setLatLng(e.latlng) .setContent(out) .openOn(thismap); }); } else { var out = "Coordinates: "+lat+","+lng; var popup = L.popup() .setLatLng(e.latlng) .setContent(out) .openOn(thismap); } }); l_mcd[mapid].map.on('moveend',function(e) { showbounds(e.target.mapid); }); showbounds(mapid); if(l_mcd[mapid].featuregroup.getLayers().length) { l_mcd[mapid].map.fitBounds(l_mcd[mapid].featuregroup.getBounds(),{maxZoom: 14}); // debugger; if(l_mcd[mapid].approxborder) { var gj = l_mcd[mapid].markercluster.toGeoJSON(); var options = {maxEdge: 0}; var hull = turf.concave(gj, options); var envelope = turf.envelope(gj); var length = turf.length(envelope) / 16; var buffered = turf.buffer(hull, length); L.geoJSON(buffered).setStyle({color: "#666", weight: 1, dashArray: "4"}).addTo(l_mcd[mapid].map); } } }); function showbounds(q) { let zoom = l_mcd[q].map.getBounds(); if (l_mcd[q].mon_nw_long) $(l_mcd[q].mon_nw_long).val(zoom.getWest()); if (l_mcd[q].mon_se_lat) $(l_mcd[q].mon_se_lat).val(zoom.getSouth()); if (l_mcd[q].mon_se_long) $(l_mcd[q].mon_se_long).val(zoom.getEast()); if (l_mcd[q].mon_nw_lat) $(l_mcd[q].mon_nw_lat).val(zoom.getNorth()).trigger("change"); if(l_mcd[q].mon_z) $(l_mcd[q].mon_z).val(l_mcd[q].map.getZoom()); } function mindatmarkers(q) { /* if(l_mcd[q].timer) { clearTimeout(l_mcd[q].timer); } */ if(l_mcd[q].map.getZoom()<7) { return; } }
- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
China
 
  • Henan
"Dan Costian" Collection
Namibia
 
  • Kunene Region
    • Outjo
Amir Akhavan Collection +1 other reference
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