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Glen Riddle, Middletown Township, Delaware County, Pennsylvania, USAi
Regional Level Types
Glen Riddle- not defined -
Middletown TownshipTownship
Delaware CountyCounty
PennsylvaniaState
USACountry

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Latitude & Longitude (WGS84):
39° 53' 47'' North , 75° 26' 15'' West
Latitude & Longitude (decimal):
39.89639,-75.43750
GeoHash:
G#: dr46gquj6
GRN:
N27W42
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Lima2,735 (2017)2.3km
Chester Heights2,626 (2017)3.3km
Village Green-Green Ridge7,822 (2017)3.8km
Rose Valley949 (2017)4.5km
Media5,363 (2017)4.8km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Tuscarora Lapidary SocietyBrookhaven, Pennsylvania6km
Delaware Mineralogical Society, Inc.Wilmington, Delaware19km
Delaware Valley Paleontological SocietyPhiladelphia, Pennsylvania24km
Philadelphia Mineralogical SocietyPhiladelphia, Pennsylvania24km
Delaware Valley Earth Science SocietyWoodbury, New Jersey25km
Mindat Locality ID:
29416
Long-form identifier:
mindat:1:2:29416:1
GUID (UUID V4):
0


Harmotome, as small, crusiform twins, was found in fractures in a gabbro dike intruding serpentine (Meier, 1939). The outcrop is in a railroad cut about 300 feet south of the Rt 452 overpass.

MEIER (A. E.). Association of harmotome and barium feldspar at Glen Riddle, Pennsylvania.
Amer. Min., 1939, vol. 24, pp. 540-560.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘCorundum4.CB.05Al2O3
Group 9 - Silicates
ⓘMicrocline
var. Hyalophane		9.FA.30(K,Ba)[Al(Si,Al)Si2O8]
ⓘOrthoclase9.FA.30K(AlSi3O8)
ⓘHarmotome9.GC.10Ba2(Si12Al4)O32 · 12H2O

List of minerals for each chemical element

HHydrogen
Hⓘ HarmotomeBa2(Si12Al4)O32 · 12H2O
OOxygen
Oⓘ CorundumAl2O3
Oⓘ HarmotomeBa2(Si12Al4)O32 · 12H2O
Oⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Oⓘ OrthoclaseK(AlSi3O8)
AlAluminium
Alⓘ CorundumAl2O3
Alⓘ HarmotomeBa2(Si12Al4)O32 · 12H2O
Alⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Alⓘ OrthoclaseK(AlSi3O8)
SiSilicon
Siⓘ HarmotomeBa2(Si12Al4)O32 · 12H2O
Siⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Siⓘ OrthoclaseK(AlSi3O8)
KPotassium
Kⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Kⓘ OrthoclaseK(AlSi3O8)
BaBarium
Baⓘ HarmotomeBa2(Si12Al4)O32 · 12H2O
Baⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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